So9
Controlled Fusion isn't the problem or the goal.
We need controlled fusion that is a net producer of energy rather than a consumer of it.
So9
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none of the four types of fusion reactions I've seen in the last couple years are net producers of energy except for cold fusion. while the DOE has been saying positive stuff about it of late, cold fusion is still seen to be the least likely of the bunch to make the grade. But who knows. the real news these days is happening on the scientific and technological front. where anything can happen.