I voted all the betting comments up because I think this is awesome. Does this kind of thing happen often here?
I occasionally offer people bets, but I think this has been the first time for me that the subject of contention is the right shape for betting to be a real possibility.
I would like to propose this as a thread for people to write in their predictions for the next year and the next decade, when practical with probabilities attached. I'll probably make some in the comments.