Wednesday, December 12, 2018

Quote Of The Day: Max Tegmark On Time As The Fourth Dimension

Some people, I think, for reasons not fully known to me, will just never understand the concept of 4 dimensional spacetime. I've been engaged in a year long debate with a contributor to the Strange Notions site on my blog over Special Relativity's entailment of a 4 dimensional spacetime block, and despite dozens of images and a book's worth of explaining, he just doesn't get it.

I've come to the conclusion that to the lay person who has not bothered to learn Special Relativity, it is very hard if not impossible to explain this without the help of a realtime conversation and the ability to illustrate arguments. What really bugs me is when people make claims about Special Relativity or spacetime, or any of its implications, who have clearly not bothered to learn or understand the basics of the theory. But such is the case. Willful ignorance comes natural to us, so I can't say I'm surprised when I experience it.

I stumbled across a paper by Argentinian physicist Gustavo Romero, who's written several papers on the 4 dimensional block view. In his paper he quotes MIT physicist Max Tegmark on time as the fourth dimension and its illusory nature. It's interesting to hear the dominant view among physicists, which so profusely contradicts our everyday experience of reality in the manifest image.

Time is the fourth dimension. The passage of time is an illusion. We have this illusion of a changing, three-dimensional world, even though nothing changes in the four dimensional union of space and time of Einstein’s relativity theory. If life were a movie, physical reality would be the entire DVD: Future and past frames exist just as much as the present one.

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