It's 2018, it's been lit decades since I read Dale Carnegie's *How to win friends and influence people* (after Paul Graham's 👍), so I'm very happy that #StackOverflow is giving Explicit Instructions on How To Be Nice On The Internet:

https://meta.stackexchange.com/questions/311737/lets-hold-language-in-comments-to-the-same-standard-as-posts?cb=1

"Avoid accidental misinterpretation of your comment by being deliberately explicit about your intent"

"Flag … condescending / mean-spirited 'jabs'"

"deliberately show that you at least considered how someone would receive your comment"

👏