Jobs is such an extremist and he forgot that PPT or anything visual is not to help you learn, but to help you communicate with others. No matter how much you know, if you cannot easily lay it out in front of others, you can be dead meat.
I overheard someone in my department say that you should never show up to a meeting with Steve Jobs with a deck of slides. Jobs’s aversion to people using slides in meetings was well known inside Apple. “I hate the way people use slide presentations instead of thinking,” Jobs told biographer Walter Isaacson when describing meetings upon his return to Apple in 1997. “People would confront a problem by creating a presentation. I wanted them to engage, to hash things out at the table, rather than show a bunch of slides. People who know what they’re talking about don’t need PowerPoint.”