Proof by contradiction: You'll never read the blogs of people who failed to make a passive income by having a blog about making a passive income by having a blo

Proof by contradiction: You'll never read the blogs of people who failed to make a passive income by having a blog about making a passive income by having a blog about passive income, because you reading such a failed blog would imply that blog had a readership and would therefore make money off advertising so it wouldn't be a failed blog. QED. It's sort of the Anthropic principle: you could only notice that if such blogs existed, and such blogs could only exist if you read them, so you've answered your own question.