The material created will be a better poison/virus. The algorithm to keep the fusion tokamak from going boom will be at best 99% correct. The new solar cell? More exotic materials required than the current.
Blind optimism is a vice we cannot afford.
Reasonable is when you communicate the tradeoffs. More efficient, but more complex supply chain. Easier to immediately build, but we have to quadruple the computing power per cubic meter of reactor. More frequently discovered materials, but Uncle Ted can nail down the synthesis of the next VX, and a dispersal system in his garage.
Someone comes to me talking net gains. My next question is, "What's under the sheet you don't want to address out loud?" Under there is most often the real meat of the endeavor.
It's much easier to destroy and to enslave than to create something good. There I was thinking of the possible positive vs electricity cost.
Yes we might doom us all with AI. I hope the good win, wild time.