From Ryan Dickherber:
Autodidacticism is when you teach yourself rather than letting others teach you. It is sometimes argued that autodidacticism is a poor choice, since you are being taught by someone who doesn’t know a lot. Actually, it’s not a poor choice, but the only rational choice, because it is not rational to unquestioningly absorb knowledge from others. What’s rational is to seek relief from your uncertainty, which may include finding knowledgeable people and skeptically evaluating their teachings. That’s a lot different than transplanting their knowledge into your brain, which is what the anti-autodidacts would have us do. To autodidacts, other people are a resource like any other.