Sometimes I have faulty premises but these two films are the apex of bad premises. 1 Million Years BC is a movie who many six or seven year olds would embrace, I was one of those kids. Now only Sarah Palin and her intellectual kin would see as being a historical film. It had a young Raquel Welch.
The second is just as idiotic and to this day I still wonder if its a kinda prodrug movie. Its premise was if you took lsd and other drugs you could literally devolve. It had a young William Hurt in the lead.
The film was Altered States. I actually paid money to see this when it came out in 1980.