You are probably talking about Woody Allen's "Sleeper".
an anthropoligst visits an alien planet and talks to a jellyfish about its cultures creation myth. indignant, the jellyfish recoil - they have no such myth, only a scientific account as rational creatures. obviously, agrees the researcher; did life first appear on land or sea? confused, the jellyfish ask what is meant. well, the researcher, says, was the first life here or over there (pointing past the shore inland). the jellyfish are more confused - there is nothing past the shoreline. that is the edge of the great bowl that holds the ocean.
https://www.uua.org/re/tapestry/youth/chorus/workshop5/17372...
it is a simple tale, but its simplicity is somehow lost on most of our population, both scientific and otherwise. the idea that we're at the pinnacle of knowledge for anything is very silly.
operate with assumptions, but dont pretend theyre not assumptions. we're still learning.
I dropped eating eggs for thirty years because we were all lied to by the experts. But as a result it brings me sheer joy to eat eggs for breakfast every single day - at my doctors recommendation ;<).
What the experts should have warned us about was our sugar intake. I have reduced mine, it's not that difficult, and only wish I had known to do so decades ago.