I can't sleep, so how about this:

A wizard comes to you and says that on one condition, you can travel with him through to the very beginnings of time, to see all about how the world came to be; to be able to jump through millions of years, watching the world evolving and watching humanity change, all over the world, right up until the present day.

The only condition is that when he returns you from your journey, he takes your arms and legs, leaving you highly disabled for the rest of your life.

Do you take the wizard's offer?