Ok.
But 20 people living 100 years consecutively are much more productive (in ideas, investigation, passion, creativity, etc.) than just a person living 2000 years.

We need generational change to happen in order to some progress to be established in our societies.

Most people older than 60 years old (i.e.) will never understand Bitcoin proposition if they haven't got it yet.
People don't often change their mind once they're of certain age.

That's what I mean with 'progress': ability to change and evolve.