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It's a well-known, running joke (or criticism) in the fusion community that

Fusion is always 30 years away.

refering to the considerable difficulties that harnessing nuclear fusion as an energy source has faced since the 1940's.

Who said that first?

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    $\begingroup$ In a more comical delivery, the situation is stated as "nuclear fusion is the technology of the future ...and always will be!". $\endgroup$ – Steve Jun 7 at 15:42
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    $\begingroup$ Nuclear fusion is 8 light-minutes away. $\endgroup$ – Rodrigo de Azevedo Jun 7 at 16:43
  • $\begingroup$ @RodrigodeAzevedo :-D Yes, but that distance in space, not time. $\endgroup$ – stafusa Jun 7 at 20:06
  • $\begingroup$ It was always "10 years away" , at least on sci.physics (that's Usenet to you youngsters) $\endgroup$ – Carl Witthoft Jun 8 at 15:22
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    $\begingroup$ @CarlWitthoft Strange, I've never heard about 10, always 30 years, if not 50. $\endgroup$ – stafusa Jun 8 at 15:32

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