Right. It&#x27;s fascinating how often I hear people saying that can learn by experience but wouldn&#x27;t do a PhD.<p>A PhD is a guaranteed salary for five years to do pretty much whatever you want (plus a bit of politicking to explain to someone why what you&#x27;re doing is related to an existing grant, which is way easier than it sounds). And bonus: you get to work on things that no one has ever done before, instead of just teaching yourself stuff everyone else already knows out of a book.