R.A.H. is invoked in an article about future treatments for bi-polar disorder:
The science fiction writers whose works I’ve read mostly seem to have underestimated how long it would take for their predictions to come true (though occasionally they overestimated). Robert Heinlein, one of my favorite writers, forecast “cold sleep” would be common by 1970, so that people with incurable diseases or any other reason (and enough money) could have themselves put in suspended animation. (In the same book, The Door Into Summer, he predicted waterbeds would be invented – after 2001.)
Interesting information.