Self and Io are both languages that have similar concepts but weren't direct inspiration; in Self's case, it was pure chance (I've never actually used Self), an

Self and Io are both languages that have similar concepts but weren't direct inspiration; in Self's case, it was pure chance (I've never actually used Self), and in Io's case, Slate was a more direct influence. Io didn't have much mindshare, despite being another language I love (but never use).