Is time real?
," a public television and multimedia program featuring the world's leading thinkers exploring humanity's deepest questions regarding the cosmos, consciousness and a search for meaning. Kuhn is co-editor of The Mystery of Existence: Why Is There Anything At All? Kuhn contributed this article, based on two recent"Closer To Truth" episodes , toWhy is time controversial? It feels real, always there, inexorably moving forward. Time has flow, runs like a river.
"What physics gives us," Price said,"is the so-called 'block universe,' where time is just part of a four-dimensional space-time … and space-time itself is not fundamental but emerges out of some deeper structure." "So life is like a movie, and space-time is like the DVD," he added;"there's nothing about the DVD itself that is changing in any way, even though there's all this drama unfolding in the movie. We have the illusion, at any given moment, that the past already happened and the future doesn't yet exist, and that things are changing. But all I'm ever aware of is my brain state right now. The only reason I feel like I have a past is that my brain contains memories.
"Isaac Newton," Barbour noted,"insisted that even if absolutely nothing at all happened, time would be passing, and that I believe is completely wrong." Fotini Markopoulou-Kalamara, a theoretical physicist at the Perimeter Institute, said,"I have the distressing experience of physicists telling me that time is not real. … It confuses me, because time seems to be real. Things happen. When I clap my hands, it happened. … I would prefer to say that general relativity is not the final theory than to say that time does not exist."
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