That depends entirely on the use-case - for example if you wanted to build an AI to operate a self-driving car, just training on unlabelled data scraped from th

That depends entirely on the use-case - for example if you wanted to build an AI to operate a self-driving car, just training on unlabelled data scraped from the internet is only going to get you so far. It doesn't learn how to do EVERYTHING (not yet at least).