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Re:MIT-designed project achieves major advance toward fusion... by pfdietz on Saturday September 11, 2021 @08:45AM (#28491540)
It's not that cost plays into it, it's that cost (broadly defined) matters, and the metric you have chosen doesn't matter. As a consumer I don't care how energy dense a fuel is; I care only about what it costs me to get that energy.

You might try to argue high fuel energy density implies low cost, but this is clearly not the case in general.

Re:MIT-designed project achieves major advance toward fusion... by Firadeoclus on Monday September 13, 2021 @01:20PM (#28514094)
Exactly, and fuel is only a part of the consideration.

Though it's also true that the infrastructure to process, deliver and store large amounts of fossil fuel comes at a higher cost than is usually considered (as some of it is subsidised and socialised), plus there's the pollution.