A handful of generations seems far fetched, a couple seems a loose estimation. next generation seems closer to reality.

AFAIK the collapse has already begun and is happening right now.

Yeah, we've got less than two billion years before the Sun expands enough to cook off our atmosphere. I suspect we will be extinct before that, however. As a collective, we're not very bright.

Really we should just be focusing on building a time machine and re-populate the pre-human past. I imagine that no matter what happens, we could just populate infinite timelines (But we are more likely to already be on that exact timeline)

That seems a bit of a long-shot. I'm not sure if it is less likely than us causing our own extinction, however.

I don't watch a lot of movies, and I recall even fewer, but there is an appropriate line in The Matrix about how a human can be smart but humans are pretty dumb as a whole. It seems to be remarkably true.

You're thinking of Men in Black.

"A person is smart. People are dumb, panicky dangerous animals and you know it. Fifteen hundred years ago everybody knew the Earth was the center of the universe. Five hundred years ago, everybody knew the Earth was flat, and fifteen minutes ago, you knew that humans were alone on this planet. Imagine what you'll know tomorrow."

I suspect you're right. I don't watch many movies so I'll defer to you.

This would be great, except time does not exist. it is an artificial human construct we use to explain ourselves some stuff we do not comprehend.

We've got two billion years to learn how to control the sun, increase the Earth's orbital radius, or move home. Sounds manageable.

Home?

"move [to a new] home"

Oh, there are plenty of things that will wipe out humans far earlier. I was just pointing out that there's always something threatening to destroy us.

I just don't see the point in this.

Knowing about the eventual heat-death of the universe doesn't make the immediate prospect of my family and I dying in a water riot any more palatable.