I’m someone with ADHD who takes prescribed stimulants and they don’t make me work faster or smarter, they just make me work. Without them I’ll languish in an unfocused haze for hours, or zone in on irrelevant details until I realise I have an hour left in the day to get anything done. It could make me 20% less intelligent and it would still be worth it; this is obviously an extreme, but given the choice, I’d rather be an average developer that gets boring, functional code done on time than a dysfunctional genius who keeps missing deadlines and cannot be motivated to work on anything but the most exciting shiny new tech.

I have family that had ADHD, as a kid (they called it “hyperactivity,” back then). He is also dyslexic.

The ADHD was caught early, and treated, but the dyslexia was not. He thought he was a moron, for much of his early life, and his peers and employers did nothing to discourage that self-diagnosis.

Since he learned of his dyslexia, and started treating it, he has been an engineer at Intel, for most of his career (not that I envy him, right now).