Of problems, solutions, and smart contracts that are ready-to-hand
But beware the macchine inutili fallacy, which is the tendency to assume that a complex artifact must be in the nature of a can opener and not a useless machine.
What a brilliant piece!!
Nothing impressed me like that for a long time!
Will forward to normies that ask 'what is that bitcoin thing?' and then fall asleep on 30th second of my explanation
Regarding “If anyone has heard this “can opener” thing before and thinks they know where it came from, please get in touch with me.” — I read the can opener metaphor in a circa 2015 article by David Chapman. https://meaningness.com/understanding