David J. Gross - What's Real About Time?

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Time seems natural and absolute: the flow of moments, one following another, from the unknown past to the knife's edge present to the unknowable future. But perhaps this is not so. Einstein shocked the world by showing that time was relative. What's the latest about time?



David Jonathan Gross is an American particle physicist and string theorist.


Closer to Truth presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.
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Absolutely brilliant, lost count of how many times I've watched this already!

vernongrant
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Wonderful telling voice David Gross has, also his timing and silences in between. Greet to listen to.

martijn
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"Things are going to get weirder!" Yeah, that's about where my world is at! Strap in and enjoy the ride I say! What an incredible time we think we live in. 🤗🤗🤗

robbie
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Anyone who’s had an old VCR with a clock on it knows just how mysterious time really is.

bltwegmann
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I wouldn't want to take mushrooms with this guy, he would break my brain

BILLY-pxhw
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This is a masterful presentation of time. Incredible.

kioku-san
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Yes, this topic is complicated. It's interesting to hear his views on what is, and how, and when it functions. We are placed in a time in which "we can only move in one direction" until we are stopped by death. Excellent!

JacksonCaesar
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Continuously in the present time. Losing grasp of the past and forever reaching for the futur. Yet, the present time is all there is.

patrickboudreau
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I have also thought of this concept while trying to deal with the grief of my mom’s passing.

bostonmetalclips
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How do quantum fields fit into 4D space-time block universe, especially considering when space is not represented in quantum field equations? Could the 4D space-time block universe contain the past, with quantum future in some way outside block universe?

jamesruscheinski
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I love these videos from Robert, but I think differently concerning TIME. No event, no instance of quantum wave function collapses without TIME being there to greet it. It's not a product of something, but rather the Progenitor of All.

wayneasiam
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It's just beating around the bush toying around conceptual thoughts from the beginning to the end and still we haven't got the faintest idea what's the reality of time.

malayangrago
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Love it! Would love to see a 90 minute clip ^^

thomasandersen
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Question: Is this part of a longer interview? Which one? So interesting and good questions asked, indeed!

tomhummel
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The universe laughs at our futile attempts at making order of that which cannot be controlled or manipulated. Time is a construct. There is only NOW.

kristiandoon
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what does time / energy uncertainty principle mean?

jamesruscheinski
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Most people, when they begin thinking seriously about the nature of time,
operate with the assumption that 'time' is an actual existent.
This is understandable because that assumption is baked into our language.
Lots of sentences contain explicit references to the temporal concept.
In all the rest references to the temporal concept are implicit.
We all learned in school that every sentence has a tense.

Could it be that the reality of time is contained entirely in the thinking process?
I say yes.
As soon as one internalizes that understanding
the mysterious nature of time evaporates completely and
with the mystery go all temporal paradoxes.

To put it another way
there is only stuff and that stuff is moving.
From this fact the thinking process synthesizes the temporal concept.
It does this as a way to simplify tracking the movements of vast amounts of stuff.
A 'day' is just a very efficient way to say one revolution of the Earth.
The clock's hands do exactly the same job
for everything that's moving.

If any reader still believes that time is 'real'
then tell me what it's made of. lol

REDPUMPERNICKEL
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It blows my mind that as soon as something happens, it is infinitely out of reach.

stoneagedjp
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This turned out to be a very interesting interview. I have my own hypothesis concerning time: I believe that the concept of time and death are intricately tied together. I believe that man created the concept of time to gauge where he is at on the line segment of birth to death. The ability to gauge where we are at on that line segment helps to allay the anxiety that we feel subconsciously regarding death.

daves
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For four dimensional space-time, is time measuring the evolution of space into the past? In quantum mechanics, does time measure the evolution of the wave function into the future?

jamesruscheinski