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  • Email Debates Archives - Unreal Blog
    them can be consistently re interpreted according to your theory If this is so it s dam surprising I mean no offense to you you re obviously a very bright individual and you know much more about this stuff than I do but I d have to question how something like this slipped right through physicists fingers for 100 years These are gravity related questions and fall under GR My theory doesn t try to reinterpret GR or gravity at all I put theory in inverted quotes because to me it is a rather obvious observation that there is a distinction between what we see and the underlying causes of our perception The algebra involved is fairly simple by physics standards Supposing you re right in that space and time are actually Galilean and that the effects of SR are artifacts of our perception How then are the results of the Michelson Morley experiments explained I m sorry if you did explain it in your book but it must have flown right over my head Or are we leaving this as a mystery an anomaly for future theorists to figure out I haven t completely explained MMX more or less leaving it as a mystery I think the explanation hinges on how light is reflected off a moving mirror which I pointed out in the book Suppose the mirror is moving away from the light source at a speed of v in our frame of reference Light strikes it at a speed of c v What is the speed of the reflected light If the laws of reflection should hold it s not immediately obvious that they should then the reflected light has to have a speed of c v as well This may explain why MMX gives null result I haven t worked out the whole thing though I will once I quit my day job and dedicate my life to full time thinking My idea is not a replacement theory for all of Einstein s theories It s merely a reinterpretation of one part of SR Since the rest of Einstein s edifice is built on this coordinate transformation part I m sure there will be some reinterpretation of the rest of SR and GR also based on my idea Again this is a project for later My reinterpretation is not an attempt to prove Einstein s theories wrong I merely want to point out that they apply to reality as we perceive it Overall it was worth the 5 I payed Thanks for the good read Don t take my questions as an assault on your proposal I m honestly in the dark about these things and I absolutely crave light he he If you could kindly answer them in your spare time I d love to share more ideas with you It s good to find a fellow thinker to bounce cool ideas like this off of I ll PM you again once I m fully

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  • SFN - Science Forums Archives - Unreal Blog
    in http www space com stating that they found a galaxy at about 13 billion light years away I am trying to figure out what that statement means To me it means that 13 billion years ago this galaxy was where we see it now Isn t that what 13b LY away means If so wouldn t that mean that the universe has to be at least 26 billion years old I mean the whole universe started from one singular point how could this galaxy be where it was 13 billion years ago unless it had at least 13 billion years to get there Ignoring the inflationary phase for the moment I have heard people explain that the space itself is expanding What the heck does that mean Isn t it just a fancier way of saying that the speed of light was smaller some time ago swansont 03 27 2007 09 10 AM Quote Originally Posted by Mowgli Post 329204 I mean the whole universe started from one singular point how could this galaxy be where it was 13 billion years ago unless it had at least 13 billion years to get there Ignoring the inflationary phase for the moment Ignoring all the rest how would this mean the universe is 26 billion years old Quote Originally Posted by Mowgli Post 329204 I have heard people explain that the space itself is expanding What the heck does that mean Isn t it just a fancier way of saying that the speed of light was smaller some time ago The speed of light is an inherent part of atomic structure in the fine structure constant alpha If c was changing then the patterns of atomic spectra would have to change There hasn t been any confirmed data that shows that alpha has changed there has been the occasional paper claiming it but you need someone to repeat the measurements and the rest is all consistent with no change Martin 03 27 2007 11 25 AM To confirm or reinforce what swansont said there are speculation and some fringe or nonstandard cosmologies that involve c changing over time or alpha changing over time but the changing constants thing just gets more and more ruled out I ve been watching for over 5 years and the more people look and study evidence the LESS likely it seems that there is any change They rule it out more and more accurately with their data So it is probably best to ignore the varying speed of light cosmologies until one is thoroughly familiar with standard mainstream cosmology You have misconceptions Mowgli General Relativity the 1915 theory trumps Special Rel 1905 They don t actually contradict if you understand them correctly because SR has only a very limited local applicability like to the spaceship passing by Wherever GR and SR SEEM to contradict believe GR It is the more comprehensive theory GR does not have a speed limit on the rate that very great distances

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  • Topical Archives - Unreal Blog
    would not be going around feeling that there is a strange something inside me So your soul is expected to be the key to your personal identity Continue reading personal identity personality religions soul Philosophy I Think Therefore I am January 7 2016 manoj I read somewhere that what Descartes really said was I think therefor I am French Or may be I think in French therefore I am Ok that was in a phrasebook called Wicked French In reality the phrase was originally written in Latin I believe Cogito Ergo Sum It introduced us to the beautiful geeky word Ergo But what does the statement really mean Continue reading descartes dualism Philosophy Physics What Does it Feel Like to be a Bat November 28 2015 manoj It is a sensible question What does it feel like to be a bat Although we can never really know the answer because we can never be bats we know that there is an answer It feels like something to be a bat Well at least we think it does We think bats have consciousness and conscious feelings On the other hand it is not a sensible question to ask what it feels like to be brick or a table It doesn t feel like anything to be an inanimate object Continue reading bat Nigel Thomas perception of space relativity space and time Life and Death Physics Science Other Known Conspiracies October 8 2015 manoj A conspiracy theory remains a theory and fodder for crackpots until it is blown wide open At that point the crackpots become award winning journalists and the leaders who were considered national heroes become sociopathic criminals Such is the fickleness of popular opinion and so it will be with the 9 11 conspiracy when it becomes widely known if it ever does that it was a conspiracy Continue reading 9 11 9 11 conspiracy conspiracies Debates Life and Death Philosophy God A Personal Story September 29 2015 manoj I want to wrap up this series on atheism with a personal story about the point in time where I started diverging from the concept of God I was very young then about five years old I had lost a pencil It had just slipped out of my schoolbag which was nothing more than a plastic basket with open weaves and a handle When I realized that I had lost the pencil I was quite upset I think I was worried that I would get a scolding for my carelessness You see my family wasn t rich We were slightly better off than the households in our neighborhood but quite poor by any global standards The new pencil was to me a prized possession Continue reading atheism Debates god Debates Philosophy Physics The Origins of Gods June 1 2015 manoj The atheist theist debate boils down to a simple question Did humans discover God Or did we invent Him The difference between discovering and inventing is the similar to the

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  • Physics Archives - Unreal Blog
    the conspiracy theories about 9 11 seriously is the ardor and certainty of the so called debunkers They are so sure of their views and so ready with their explanations that they seem rehearsed coached or even incentivized Looking at the fire induced symmetric and free fall collapse of WTC7 how can anyone with any level of scientific background be so certain The best a debunker could say would be something like Yes the free fall and the symmetry aspects of the collapse do look quite strange But the official explanation seems plausible At least it is more plausible than a wild conspiracy by the government to kill 3000 of our own citizens But that is not at all the way they put it They laugh at the conspiracy theories make emotional statements about the technical claims and ignore the questions that they cannot explain away They toe the official line even when it is clearly unscientific They try to attack the credibility of the conspiracy camp despite the obvious fact that it has the support of many seasoned professionals like architects physics teachers structural engineers and university professors Continue reading 9 11 9 11 conspiracy Debates Philosophy Physics Atheism and Unreal God May 17 2015 manoj The only recourse an atheist can have against this argument based on personal experience is that the believer is either is misrepresenting his experience or is mistaken about it I am not willing to pursue that line of argument I know that I am undermining my own stance here but I would like to give the theist camp some more ammunition for this particular argument and make it more formal Continue reading atheism craig Debates god hitchens Life and Death Physics Science 9 11 Motives for Mass Murder May 13 2015 manoj In the first post in this series we saw that 7 World Trade Center building was the smoking gun of a possible conspiracy behind the 9 11 attack The manner in which it collapsed and the way the collapse was investigated are strong indications of a conspiracy and a cover up However when I first heard of the conspiracy theory in any serious form the first question I asked myself was why what possible motive could any person or organization have to commit mass murder at this scale I honestly couldn t see any and as long as you don t see one you cannot take these conspiracy theories seriously Of course if you buy the official story that the conspiracy actually originated in Afghanistan among terrorist monsters you don t need to look for any rational motives Continue reading 9 11 9 11 conspiracy Debates Philosophy Physics Atheism vs God Experience May 6 2015 manoj I have a reason for delaying this post on the fifth and last argument for God by Dr William Lane Craig It holds more potency than immediately obvious While it is easy to write it off because it is a subjective experiential argument the lack

    Original URL path: http://www.thulasidas.com/category/topical/physics/ (2016-02-16)
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  • Philosophy Archives - Unreal Blog
    is an answer It feels like something to be a bat Well at least we think it does We think bats have consciousness and conscious feelings On the other hand it is not a sensible question to ask what it feels like to be brick or a table It doesn t feel like anything to be an inanimate object Continue reading bat Nigel Thomas perception of space relativity space and time Debates Life and Death Philosophy God A Personal Story September 29 2015 manoj I want to wrap up this series on atheism with a personal story about the point in time where I started diverging from the concept of God I was very young then about five years old I had lost a pencil It had just slipped out of my schoolbag which was nothing more than a plastic basket with open weaves and a handle When I realized that I had lost the pencil I was quite upset I think I was worried that I would get a scolding for my carelessness You see my family wasn t rich We were slightly better off than the households in our neighborhood but quite poor by any global standards The new pencil was to me a prized possession Continue reading atheism Debates god Debates Philosophy Physics The Origins of Gods June 1 2015 manoj The atheist theist debate boils down to a simple question Did humans discover God Or did we invent Him The difference between discovering and inventing is the similar to the one between believing and knowing Theist believe that there was a God to be discovered Atheists know that we humans invented the concept of God Belief and knowledge differ only slightly knowledge is merely a very very strong belief A belief is considered knowledge when it fits in nicely with a larger worldview which is very much like how a hypothesis in physics becomes a theory While a theory such as Quantum Mechanics for instance is considered to be knowledge or the way the physical world really is it is best not to forget the its lowly origin as a mere hypothesis My focus in this post is the possible origin of the God hypothesis Continue reading atheism Debates Nietzsche Debates Philosophy Physics Atheism and Unreal God May 17 2015 manoj The only recourse an atheist can have against this argument based on personal experience is that the believer is either is misrepresenting his experience or is mistaken about it I am not willing to pursue that line of argument I know that I am undermining my own stance here but I would like to give the theist camp some more ammunition for this particular argument and make it more formal Continue reading atheism craig Debates god hitchens Debates Philosophy Physics Atheism vs God Experience May 6 2015 manoj I have a reason for delaying this post on the fifth and last argument for God by Dr William Lane Craig It holds more potency than immediately

    Original URL path: http://www.thulasidas.com/category/topical/philosophy/ (2016-02-16)
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  • Science Archives - Unreal Blog
    smell the odor the chemical trail the dog has left in the air Hearing and smelling are three place perceptions the dog generates sound odor the sound odor travels to you you perceive the sound odor But seeing or touching is a two place thing the dog there and you here perceiving it directly Why is that Why do we feel that when we see or touch something we sense it directly This belief in the perceptual veracity of what we see is called naive realism We of course know that seeing involves light so does touching but in a much more complicated way what we are seeing is the light reflected off an object and so on It is in fact no different from hearing something But this knowledge of the mechanism of seeing doesn t alter our natural commonsense view that what we see is what is out there Seeing is believing Extrapolated from the naive version is the scientific realism which asserts that our scientific concepts are also real eventhough we may not directly perceive them So atoms are real Electrons are real Quarks are real Most of our better scientists out there have been skeptical about this extraploation to our notion of what is real Einstein probably the best of them suspected that even space and time might not be real Feynman and Gell Mann after developing theories on electrons and quarks expressed their view that electrons and quarks might be mathematical constructs rather than real entities What I am inviting you to do here is to go beyond the skepticism of Feynman and Gell Mann and delve into Einstein s words space and time are modes by which we think not conditions in which we live The sense of space is so real to us that we think of everything else as interactions taking place in the arena of space and time But space itself is the experience corresponding to the electrical signals generated by the light hitting your retina It is a perceptual construct much like the tonality of the sound you hear when air pressure waves hit your ear drums Our adoption of naive realism results in our complete trust in the three dimensional space view And since the world is created in our brain as perceptual constructs based on light its speed becomes an all important constant in our world And since speed mixes space and time a better description is found in a four dimensional Minkowski geometry But all these descriptions are based on perceptual experiences and therefore unreal in some sense I know the description above is highly circular I talked about space being a mental construct created by light traveling through get this space And when I speak of its speed naturally I m talking about distance in space divided by time and positing as the basis for the space time mixing This circularity makes my description less than clear and convincing But the difficulty goes deeper than that You see all we have is this cognitive construct of space and time We can describe objects and events only in terms of these constructs even when we know that they are only cognitive representations of sensory signals Our language doesn t go beyond that Well it does but then we will be talking the language for instance of Advaita calling the constructs Maya and the causes behind them Brahman which stays unknowable Or we will be using some other parallel descriptions These descriptions may be profound wise and accurate But ultimately they are also useless It reminds me of those two guys lost while flying around in a hot air balloon Finally they see a man on the ground and shout Hey can you tell us where we are The complete accurate and useless reply is You are in a hot air balloon about 100 ft above sea level The guy on the ground must have been a philosopher But if philosophy is your thing the discussions of cognitive constructs and unknown causations are not at all useless Philosophy of physics happens to be my thing and so I ask myself what if I assume the unknown physical causes exist in a world similar to our perceptual construct I could then propagate the causes through the process of perception and figure out what the construct should look like I know it sounds a bit complex but it is something that we do all the time We know for instance that the stars that we see in the night sky are not really there we are seeing them the way they were a few or a few million or billion years ago because the light from them takes a long time to reach us Physicists also know that the perceived motion of celestial objects also need to be corrected for these light travel time effects In fact Einstein used the light travel time effects as the basis for deriving his special theory of relativity He then stipulated that space and time behave the way we perceive them derived using the said light travel time effects This of course is based on his deep understanding that space and time are the modes by which we think but also based on the assumption that the the causes behind the modes also are similar to the modes themselves This depth of thinking is lost on the lesser scientists that came after him The distinction between the modes of thinking and their causation is also lost so that space and time have become entities that obey strange rules Like bent spoons Photo by General Press1 Albert Einstein Philosophy Physics Richard Feynman Science Work and Life Average Beauty April 19 2013 manoj If you have migrated multiple times in your life you may have noticed a strange thing The first time you end up in a new place most people around you look positively weird Ugly even But slowly after a year or two you

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  • Creative Archives - Unreal Blog
    angles Each perspective has its role in how the bank works From the viewpoint of traders the trading activity looks asset class centric Typically associated with a particular trading desks based on asset classes their favorite view cuts across models and products To traders all products and models are merely tools to make profit IT department views the trading world from a completely different perspective Theirs is a system centric view where the same product using the same model appearing in two different systems is basically two completely different beasts This view is not particularly appreciated by traders quants or quant developers One view that the whole bank appreciates is the view of the senior management which is narrowly focussed on the bottom line The big bosses can prioritise things whether products asset classes or systems in terms of the money they bring to the shareholders Models and trades are typically not visible from their view from the top unless of course rogue traders lose a lot of money on a particular product or by using a particular model When the trade reaches the Market Risk Management there is a subtle change in the perspective from a trade level view to a portfolio or book level view Though mathematically trivial after all the difference is only a matter of aggregation this change has implications in the system design The trading platform has to maintain a robust hierarchical portfolio structure so that various dicing and slicing as required in the later stages of the trade lifecycle can be handled with natural ease When it comes to Finance and their notions of cost centers the trade is pretty much out of the booking system Still they manage trading desks and asset classes cost centers Any trading platform we design has to provide adequate hooks in the system to respond to their specific requirements as well Closely related to this view is the perspective of Human Resources who decide incentives based on performance measured in terms of the bottom lines at cost center or team levels computing Corporate Life money quantitative finance wilmott Books Corporate Life Quantitative Finance Middle Office September 9 2013 manoj The perspective employed by the Middle Office team is an interesting one Their work paradigm is that of queues running in a first in first out mode As shown in the picture below they think of trades as being part of validation and verification queues When a new trade is booked it gets pushed into the validation queue from one end The Middle Office staff attacks the queue from the other end accepting or rejecting each entry The ones deemed good get into a second verification queue The bad ones are returned to the trading desks for modifications in the trade entries or possible cancellations A similar paradigm is employed in dealing with market operations such as fixing rates generating cash flow etc Market operations have their own two stage queues Note that the whole flow is to be facilitated by the trading platform which should have the capability to render different views It presents a queue based view of the data to the middle office staff and a report based view to the Market Risk Management team for instance or a trade centric view to most of the other teams It is important to each team to have a basic grasp and healthy respect for the work paradigm of the other so that they can communicate efficiently with each other It is no good ignoring the trade perspectives of the rest of the bank After all such trade perspectives evolved naturally out of years and years of trial and error computing Corporate Life money quantitative finance wilmott Books Corporate Life Quantitative Finance Quant Developers September 3 2013 manoj Unlike quants quantitative developers are more product centric Their job is to take the pricing models the output of the quant effort and make them deployable and accessible to the traders sales teams and the middle and back offices Their primary unit of work is a product because when the product definition changes regardless of whether it uses a new or an existing pricing model they have to integrate it into the system Even if it is merely a product variant they have to implement all the infrastructure and take care of the approval processes for its downstream handling For this reason the work paradigm that makes most sense to a quantitative developer is product centric Compared to the quants the quantitative developers are closer to the day to day activities on Front Office and Middle Office They view the trades identified by unique IDs as instantiations of products Once booked they end up in the trading platform database as distinct objects with attributes defined in trade inputs In addition to trade input they use market data feeds to price a product in the form of a trade The trading platform comes with a pricing interface which combines trade information and market data It also runs in what they call batch mode regularly at a given time of the day to compute prices and sensitivities of all trades Since it is the trading platform that performs the batch job the quantitative developers may take care of the associated resources like the grid computing platforms market data feeds trade databases etc In this respect their product centric perspective may get diffused into a trade centric view computing Corporate Life money quantitative finance wilmott Books Corporate Life Quantitative Finance Quants August 28 2013 manoj If you are a quant you are a mathematician with an advanced degree in mathematics or physics Your work is based on both academic research and professional peer reviewed publications You take your inputs from them apply your own formidable intelligence to come up with a stochastic pricing model that you think will work exceptionally well for a class of products You will also need the details of the products Your output is of course a pricing model

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  • Books Archives - Unreal Blog
    view Though mathematically trivial after all the difference is only a matter of aggregation this change has implications in the system design The trading platform has to maintain a robust hierarchical portfolio structure so that various dicing and slicing as required in the later stages of the trade lifecycle can be handled with natural ease When it comes to Finance and their notions of cost centers the trade is pretty much out of the booking system Still they manage trading desks and asset classes cost centers Any trading platform we design has to provide adequate hooks in the system to respond to their specific requirements as well Closely related to this view is the perspective of Human Resources who decide incentives based on performance measured in terms of the bottom lines at cost center or team levels computing Corporate Life money quantitative finance wilmott Books Corporate Life Quantitative Finance Middle Office September 9 2013 manoj The perspective employed by the Middle Office team is an interesting one Their work paradigm is that of queues running in a first in first out mode As shown in the picture below they think of trades as being part of validation and verification queues When a new trade is booked it gets pushed into the validation queue from one end The Middle Office staff attacks the queue from the other end accepting or rejecting each entry The ones deemed good get into a second verification queue The bad ones are returned to the trading desks for modifications in the trade entries or possible cancellations A similar paradigm is employed in dealing with market operations such as fixing rates generating cash flow etc Market operations have their own two stage queues Note that the whole flow is to be facilitated by the trading platform which should have the capability to render different views It presents a queue based view of the data to the middle office staff and a report based view to the Market Risk Management team for instance or a trade centric view to most of the other teams It is important to each team to have a basic grasp and healthy respect for the work paradigm of the other so that they can communicate efficiently with each other It is no good ignoring the trade perspectives of the rest of the bank After all such trade perspectives evolved naturally out of years and years of trial and error computing Corporate Life money quantitative finance wilmott Books Corporate Life Quantitative Finance Quant Developers September 3 2013 manoj Unlike quants quantitative developers are more product centric Their job is to take the pricing models the output of the quant effort and make them deployable and accessible to the traders sales teams and the middle and back offices Their primary unit of work is a product because when the product definition changes regardless of whether it uses a new or an existing pricing model they have to integrate it into the system Even if it is merely a product variant they have to implement all the infrastructure and take care of the approval processes for its downstream handling For this reason the work paradigm that makes most sense to a quantitative developer is product centric Compared to the quants the quantitative developers are closer to the day to day activities on Front Office and Middle Office They view the trades identified by unique IDs as instantiations of products Once booked they end up in the trading platform database as distinct objects with attributes defined in trade inputs In addition to trade input they use market data feeds to price a product in the form of a trade The trading platform comes with a pricing interface which combines trade information and market data It also runs in what they call batch mode regularly at a given time of the day to compute prices and sensitivities of all trades Since it is the trading platform that performs the batch job the quantitative developers may take care of the associated resources like the grid computing platforms market data feeds trade databases etc In this respect their product centric perspective may get diffused into a trade centric view computing Corporate Life money quantitative finance wilmott Books Corporate Life Quantitative Finance Quants August 28 2013 manoj If you are a quant you are a mathematician with an advanced degree in mathematics or physics Your work is based on both academic research and professional peer reviewed publications You take your inputs from them apply your own formidable intelligence to come up with a stochastic pricing model that you think will work exceptionally well for a class of products You will also need the details of the products Your output is of course a pricing model of your own or an implementation of a pricing model from the literature This is your primary work unit In order to make use of this pricing model it will have to be validated Then a set of products using the pricing model will be defined and submitted for approval Once approved with the help of trade inputs and market data each of the products can be priced and booked into the trading platform But such activities are outside the sphere of interest and influence of the quant To them how a product is instantiated into a trade is pretty irrelevant and trivial It is merely a question of specifying the trade and market inputs to the pricing model Even how various products are derived is mechanical and all the real work is done in the pricing model This perspective though accurate and functional for a quant is pretty far removed from the view of the rest of the bank which is why quants sometimes have the dubious reputation of being out of touch with the industry The point is not so much that they have to change their perspective but they should appreciate that there are other equally valid perspectives held by other business units

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