An analysis by Jim Meigs, in which he quotes Yours Truly.

I strongly disagree that SLS/Orion is the fastest way to get back to the Moon. I’ll be discussing that in a study I’ve done for the Reason Foundation that I hope will be published in a week or three. Briefly, we have all the pieces we need to do it quickly, without SLS/Orion, as long as we’re willing to go back to the Apollo levels of risk acceptance. And we’ll have to do that to beat the Chinese.