I wish that after we died, there was an afterlife where we could find out exactly how everything worked out for all time. That way, we could make predictions and bet two bottles of afterlife juice that things would go some way or another. I say this because I'm generally pessimistic about the technological potential of humanity and would bet lots of afterlife juice bottles against humanity's power production exceeding 1.00 on Sagan's expanded Kardashev scale at any point in its future [K = 0.1*(log10 P - 6), where P is power consumption in watts]. It seems like a tall order to even keep our K = 0.724 civilization going indefinitely without wrecking the biosphere even worse than we already are, although I'm much more optimistic about that than the K>1 stuff.