Comment Intellectual Exercises (Score 3, Insightful) 205
These speculations are useful intellectual exercises, but should not be taken very seriously. Intelligent life may or may not last for 10^100 years, but the chances of any detailed theory of the long term future of the universe surviving 100 years is basically nil, and even 10 years is no sure thing.
For myself, I'd bet on a "big rip", except that I don't know how to collect on such a bet.