> Part of Cialdini’s large book-buying audience came because, like me, it wanted to learn how to become less often tricked by salesmen and circumstances. However, as an outcome not sought by Cialdini, who is a profoundly ethical man, a huge number of his books were bought by salesmen who wanted to learn how to become more effective in misleading customers.

(Poor Charlie's Almanack, Charlie Munger)

Yes, the problem is that every scammer and salesman uses these techniques also, and if you've run into a few of them, having a complete stranger approach you with the standard Dale Carnegie playbook immediately sets off alarm bells.

Hah. I'm ADHD and I used to be terrible about remembering people's names -- like, their names didn't even register and I couldn't tell you what it was 30 seconds later. It wasn't that I didn't care about the person, it was just that their name would never stick. Anyway, I finally made enough people feel bad and embarrassed myself enough that I started compensating and made a point to remember basically everybody's name that I met. The change was really surprising, people notice that sort of thing and they make an effort to return the same kind of energy. My general attitude about people since then has become a lot more positive because I realized that overall, most people really don't need a whole lot of impetus to show their better side, and it's not like it costs me anything to treat somebody with a little more consideration.

I remember the book saying something like "a person's name is the most beautiful sound in the world to them." The book may say to say their name back to them (I don't remember right now), but that's not what I took away from it. It reminded me of when people would make fun of my name (first and/or last) or bring up someone famous who has the same first ("Donald Duck") or last name ("are you related Joan Rivers?"), or someone famous who sounds like my first and last name put together (Doc Rivers), and I never thought it was funny. When I see people make fun of other people's names, the recipient never seemed to enjoy it either.

Some of the stories / aphorisms refer to things that just like, don't exist anymore.

That would be quite a feat, given that Mr. Carnegie was born in the 1800's and died over 70 years ago.

I'm convinced that 99% of the people who criticize or even just talk about that book have never actually read it, and have zero idea what they're talking about. It's just in that Ayn Rand bucket of books that people talk about, because they see other people getting likes and upvotes for it.