Heinlein is obviously wrong about this, and for all his progressive and libertarian sentiments he seems to have had intensely narrow views on a few topics like

Heinlein is obviously wrong about this, and for all his progressive and libertarian sentiments he seems to have had intensely narrow views on a few topics like drugs. The one thing I'd say in defense of this quote is that it's from 1967. LSD had only been in major counter-culture circulation for a few years and a lot of the public advocates were people like Huxley and Leary who had produced documentary work on acid, but not major art. To a surprising degree, Heinlein was simply unlucky: acid-derived art got going right as he dismissed it. Pet Sounds and Revolver were 1966, admittedly, but I'm not sure how well-known their association with LSD was at the time. The really famous and overt psychedelic music like Hendrix, Jefferson Airplane, The Grateful Dead, and the Woodstock scene in general mostly hit its stride in 1968-1970. Over in non-academic writing, The Electric Kool Aid Acid Test was 1968, the same year the Whole Earth Catalog got started. Fear and Loathing was 1971. P.K. Dick wrote about LSD in Palmer Eldritch in 1965, but didn't actually try it until much later. Zelazny's work has psychedelic overtones and one in-story LSD scene, but he was just getting started in '67. One Flew Over the Cuckoo's Nest is pretty much the only major piece of acid-derived fiction I can think of by 1967. Obviously, Heinlein was wrong. But I'd be interested whether he ever followed up on this; the acid-droppers started outdistancing the squares almost immediately after he said it.