Time out of mind - Finding Your Science

The video explores the concept of time in everyday life and its relation to physics. It highlights the asymmetry in our perception of time, where we remember the past and influence the future, contrasting with the time-reversal symmetry in physical laws. The discussion extends to cosmology, suggesting that the universe's expansion might define a time direction, linked to increasing entropy. The speaker speculates that future breakthroughs in physics could radically change our understanding of time, akin to past revolutions like relativity or quantum mechanics.

What is the main difference between our everyday experience of time and its treatment in physics?

• We can remember the future in physics but not in everyday life.

• Physics laws are time-invariant, unlike our perception of time.

• Time moves faster in physics than in everyday life.

• Time is reversible in everyday life but not in physics.

What does the expansion of the universe suggest about the direction of time?

• It has no impact on the direction of time.

• It defines a specific direction of time.

• It suggests time is moving backward.

• It suggests time is cyclical.

Why is the increase of entropy significant in the context of time's direction?

• It decreases as the universe expands.

• It aligns with the universe's expansion.

• It is unrelated to the universe's expansion.

• It contradicts the laws of physics.

What might a future revolution in physics involve according to the speaker?

• A complete rejection of quantum mechanics.

• A radical change in our concept of time.

• A new understanding of gravity.

• A new theory of relativity.

What is the speaker's stance on predicting future theories about time?

• The speaker has a clear idea of future theories.

• The speaker rejects the possibility of new theories.

• The speaker believes current theories are sufficient.

• The speaker is uncertain about future theories.