It's surprised me once I got out of school and uni how little people know. But what really blew my mind is just how little they actually care.

Like someone will say they don't know how something works, I'll explain and they will stare at me blankly and I really realise they didn't want me to explain and they were actually happy not knowing. Whereas I will look at something, whether it's a kettle or pasteurisation or grass and wonder how it works. But for people actually to prefer not to know and live in ignorance really messed with me for a while.

I've largely given up now. My boss said he was getting all the heating changed in his house to have electric. I asked why he doesn't get a heat pump and he told me it's because they don't work they just blow air our like a fan so it's colder than an electric radiator. I just said okay and moved on.