Alan H. Guth - Why is the Universe Expanding?

The wildest thing that humans have ever thought of that actually is in sync with our perceptions, curious Alan seems like such a mild mannered person.

It's nice to see how he simplifies explanations in order for common folks to understand the subject.

My only critique of this channel is that we aren't told when they videos were made.

I have heard about about Alan Guth for 50 years. I never expected to hear him explain in his own words his reasoning of how hyperinflation must have taken the universe from the size of an atomic particle to the embryo of our relativistic universe, with the creation of all the mass and energy we see today. My favorite quote -- "energy density equals geometry!" Thanks for making it possible!

I expected Alan to be super smart. What impresses even more is how smart Robert Kuhn is.

Another good one, still please would be nice to add information when this was recorded.

Does the density of space/time decrease with the expansion of the Universe? If the density remains constant, what mechanism produces that?

Can it be determined the speed of inflation expansion before big bang start of universe, in contrast to the speed of dark energy expansion after big bang start of universe?

Thank you Robert for producing this excellent series!

Is this the most intelligent conversation held by human beings