Pretty much what I was going to say. It also helps that books have fairly direct "runtimes" that don't get depreciated on an regular basis. Eking meaning out of

Pretty much what I was going to say. It also helps that books have fairly direct "runtimes" that don't get depreciated on an regular basis. Eking meaning out of a 60 year old book is simple - running a 60 year old program is a goddamn nightmare.