We're in something of an autodidacticism boom. I have yet to see anyone, in years, actually become proficient at college-level math/physics without formal instruction, just by doing self-study with tutorials like pdfs and videos.
There will always be major knowledge gaps or roadblocks/impasses of understanding, like notation or clarification needed. This is not to say it cannot be done but I have to see anyone do it.
There will always be major knowledge gaps or roadblocks/impasses of understanding, like notation or clarification needed. This is not to say it cannot be done but I have to see anyone do it.