What is something you taught yourself?

I gathered acorns when I was 9 years old and boiled them in briny water about 3 times to remove the tannins and roasted them in the oven to have for a snack. I don’t know whether it was teaching myself or genetic memory. I believe it was genetic memory. No one in my family ever talked about eating acorns and I’d not read about it in a book or anything. They were good, maybe not on the roasted peanut level but they all got eaten. It’s a wonder I didn’t get poisoned as a child because it wasn’t the only wild food that I gathered and ate.