I don’t think Keith Henson refers to the energy expenditure of rockets but to the total cheap energy evailable to global society. Currently we are more concered with optimizing the last out of the reamining sources and keeping society running at all. Granted there are still significant technological improvements but these are mostly small scale. Rockets have not improved at all.
I don’t think Keith Henson refers to the energy expenditure of rockets but to the total cheap energy evailable to global society. Currently we are more concered with optimizing the last out of the reamining sources and keeping society running at all. Granted there are still significant technological improvements but these are mostly small scale. Rockets have not improved at all.
My second and third point directly responded to that interpretation of the claim.