What Is the Impossibility of Everything?

Every putative physical transformation to be performed in a given time is either, one, impossible because it is forbidden by the laws of nature, or two, achievable given the right knowledge. This is the diacodome that many, many people who've read the book are really taken aback by taken aback in a good way. It's something that a sam harris spent a lot of time on in am, at least one of the waking up podcars where he interviewed david, because he was taken aback by it. But those are the only possible abilities.