I turned my home state of Florida into the Land of Xanth.
All things make sense; you just have to fathom how they make sense.
SF is the literature of the theoretically possible, and F is the literature of the impossible.
One reason I don't suffer Writer's Block is that I don't wait on the muse, I summon it at need.
Normally I work out a general summary of what I mean to do, then start writing, and the details can be different from my anticipation. So there is considerable flow, but always within channels.
In fact, I believe that we need better sex education in our own culture, here in America, so that young folk learn about things like venereal disease before they encounter it.