As I repeatedly tell my students, there's what the law says and then there's what you think it says. Most of the time our knowledge of the law is anecdotal being based on hallway conversations, what we've heard or briefly read, and suppositions we make. Just ask Bernie Goetz.

"Generosity. That was my first mistake."
"Experience must be our only guide; reason may mislead us."
"Instagram is Twitter for people who can't read."