This was a really horrible science fiction movie from 1974, and I don’t want any of my readers to make the mistake of actually watching it, which is a mistake that I sadly made.
However, I did make some interesting observations about how body types have changed since 1974. The movie stars a shirtless hairy-chested 43-year-old Sean Connery. Today, you never see men with hairy chests unless they are someone who is being mocked, but Sean Connery had a hairy chest and he was a sex symbol back in the day. Secondly, Sean Connery was skinny compared to male actors today. He was in decent shape, but he didn’t have huge biceps or ripped abs. Male actors today either lift more weights, or take steroids. All the other men in the movie were skinny ectomorphs, although they were supposed to be "eternals" who considered themselves more evolved than humans. I don't even know if a casting director today could find so many skinny ectomorphic actors. Obviously the movie was wrong in its prediction that, in the future, men would get skinnier.
The movie also feature a lot of gratuitous bare breasts. And I couldn’t help but notice that the breasts were a lot smaller in 1974. Today, a large percentage of bare breasts that you see in movies are augmented by plastic surgery. In 1974, the breasts were natural.
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If the movie had any insight into the future, it was in predicting memes that are now prevalent in "manosphere" blogs. The female eternals are feminazis, and the men are so beta that they can't even get an erection. Then hairy-chested shirtless alpha-male Sean Connery comes along, and the eternal women secretly, or maybe not so secretly, want him to rape them.