Regarding machines and discoverability: I think an interesting comparison to flesh out would be computers vs. cars. Compare how tinkerers in each came to be (op

Regarding machines and discoverability: I think an interesting comparison to flesh out would be computers vs. cars. Compare how tinkerers in each came to be (opening up their parents' car/computer, for example). Compare how "the average user" treats the thing when it breaks. Etc.