I agree, but would point out that "Try every option based on how credible it seems" is also an insufficient or under-specified answer, because the viability of

I agree, but would point out that "Try every option based on how credible it seems" is also an insufficient or under-specified answer, because the viability of each option depends on how much resources are invested in that option. I could say that how many resources an option has is a part of how credible it seems. But I didn't really specify an algorithm for choosing options, I just wanted to point out that "try it because it's an option" isn't argument in a world where one generally has unlimited hypothetical options. Edit: all that said, different energy production methods have different capital intensity levels. You get zero for a ten dollar or even a ten million dollar investment in nukes today. Solar has lower capital intensity but can still can scale to meet needs.