>I wouldn't expect every professor to write their own Wikibooks exists to allow people to collaboratively write textbooks, so every professor doesn't have to w

>I wouldn't expect every professor to write their own Wikibooks exists to allow people to collaboratively write textbooks, so every professor doesn't have to write the entire book https://en.wikibooks.org/wiki/Main_Page https://en.wikibooks.org/wiki/Main_Page