Is that really a typing problem, though? If I tried to use a "recived" slot on a Lisp struct that only had a "received" slot defined, I'd get a read-time error,

Is that really a typing problem, though? If I tried to use a "recived" slot on a Lisp struct that only had a "received" slot defined, I'd get a read-time error, and there's zero typing involved there.