But it's easier nowadays to educate yourself than it ever has been before. That was partly my point: More people are teaching themselves about more things than has been possible in the past. Certainly if I'd been born 10 years earlier, I wouldn't be nearly as well-off as I am now (though this theoretical 30-year-old me would be wiser than the 20-year-old actual me, of course). People are better able to connect to one another, and to test out their ideas, and to experience others' ideas, now that we have this monstrous network that lets you access anything at any time. When I was 13 I was attempting to debate Communist philosophy on a game design forum; I doubt I'd have been doing that without the Internet.
Don't worry. I have no illusions about my prowess. I'm only this year starting to work on things that I think say something meaningful. Maybe five or ten years from now I'll be a legitimate expert in a field or two. Even that would be faster than expected.
(I fail to see, though, how self-publishing somehow prevents me from interacting with others or letting them comment on my work. When my novel was published in 2007, self-publishing let me distribute it freely and thousands of people did — more than would have bought it, I'm sure. Many of those people, including some of the community here, decided to directly respond to it; loads of them, I assure you, were critical. Similarly, I've launched web sites on Hacker News and learned a lot from the critical feedback; my essays and the subsequent comments were similarly devastating.
If anything, I'd say that self-publishing makes it even easier for others to rip me to shreds. It's a self-perpetuating game; the better I get, the more people see my work, and the more informed the subsequent criticism is. I've gone from a community of dozens to a community of tens of thousands. I'm a masochist. I love nothing more than hearing people tell me why I should eat shit and die, especially when they're right.)