Yubikeys could be cheaper. In addition to the two I have, I bought two more to store offsite with friends and family for redundancy (with access to my password manager + important email accounts).
I agree with you this was not Dale Carnegie's intent when he wrote the book, but alexmuresan probably takes issue because the "red pilling" crowd have used Carnegie's advice to manipulate people.
Personally, salespeople have randomly complimented me and repeated my name over and over, and on the receiving end it weirded me out. So the problem is that in certain situations there is an overarching "what did you want to get out of that person?". Don't be those people.
Strike up conversations because you enjoy people and their stories.
Unfortunately there's also a large subpopulation of people flying who wear noise-cancelling headphones and have their eyes glued to their phones; choosing to be disengaged from their immediate surroundings.
Yeah, this is highly dependent on the child and parent. Some kids just require attention, are more stubborn, or are just terrible sleepers and that's definitely gonna take a greater toil on the parents.
Sure there's Bringing up Bébé, sleep training, etc. but sometimes you just get difficult kids at no fault of the parents. And some people are just okay with the chaos of children.
Also, I think for a good number of people, their first job out of college is oftentimes one they will look fondly back on because they've just finished ~17 years of school, have financial independence with a salary, and are still bright-eyed about all the possibilities.