Bill Nye the Science Guy has the word “Science” in his very name, which is how you know he really likes science and is an expert on science. Do you have “Science” in your name? Then maybe don’t talk so much.

But that doesn’t mean Nye can’t make mistakes. That’s part of science! Here’s a really big mistake he made 20 years ago:

Bill Nye the Science Guy on gender, circa 1996. (Season 4, Episode 8) “[Chromosomes] control whether we become a boy or a girl.” pic.twitter.com/oK2xPbRiKx — Ian Miles Cheong (@stillgray) April 28, 2017

Uhhhhhh… what??? I literally can’t even.

Keep in mind that this was way back in the ’90s, when we thought science was about things like “chromosomes” and “probability” and “facts.” It all seems pretty silly to the enlightened people of 2017. Now we know better. Now Bill Nye has shown us how gender really works:

Take that, science deniers! Now run along with your little refrigerator magnets and your outdated view of the world. And say hi to that poor ignorant woman who told the silly story about “XX this” and “XY that.” That is, if she’s still a woman…

(Hat tip: Twitchy)

P.S. I’m told that Rachel Bloom is actually very talented, and this isn’t the best representation of her work. I guess I’ll just have to take your word for it.