I had impression that "bugs" notion migrated to programs from bugs found in books. In older days, getting a used book from an unknown house/shop carried seriou

I had impression that "bugs" notion migrated to programs from bugs found in books. In older days, getting a used book from an unknown house/shop carried serious risks of receiving an infestation of some bugs (bedbugs, cockroaches, etc). So one had to be wary of this and not put such stray books right into the bookshelf with the rest of the good books. Thus some valuable books did have bugs. I could imagine a possible bug infestation in a stack of punch cards. Though the program printout can have "bugs" by association with a book.