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But doesn’t this actually signal progress?

At this point knowing that it’s possible, the challenges turn to make it repeatable, predictable, and cheaper.

Sure we might still be decades away, but is anybody implying otherwise?

The word "breakthrough" tends to imply something more than "we still don't know it's possible; and if it is possible, we are only closer to the next accomplishment because of the linear nature of time rather than any actual progress towards our goals".

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