- #71
homeomorphic
- 1,773
- 130
The people that published their books knew their credentials for damn sure.
But that is one of the wonders of the internet. So long as you are not concerned with turning a profit, you're fine (not a promising proposition, anyway, although people like Stewart got rich that way). I will have a PhD, so I will have credentials, but that is my plan, anyway. I expect no profits from my expository work, which I eventually plan to make available online.