Uhm no? Reading a textbook is obviously not the same as fact checking a textbook.
Parent was writing about a university LECTURE which is different from a TEXTBOOK (which is different from primary sources), so yeah, consulting other sources is checking the facts.
alt Hacker News
Parent was writing about a university LECTURE which is different from a TEXTBOOK (which is different from primary sources), so yeah, consulting other sources is checking the facts.