The five basic laws of human stupidity by Italian Economist Carlo Cipolla; The First Basic Law Always and inevitably everyone underestimates the number of stupid individuals in circulation. The Second Basic Law The probability that a certain person is stupid is independent of any other characteristic of that person. The Third Basic Law A stupid person is one who causes losses to another person or a group of people while they gain nothing or may even suffer losses. The Fourth Basic Law Non-stupid people always underestimate the damaging power of stupid individuals. In particular, non-stupid people constantly forget that in any time and place and circumstance dealing and/or hanging out with stupid people always turns out to be a costly mistake. The Fifth Basic Law Stupid people are the most dangerous type of people.
If you are giving advice that might hurt yourself and others, then as Foxworthy says, you might well be.
Not sure why you are bringing that subject (again!), cause it was covered not too long ago, and you replied to it on top of that. https://www.elitetrader.com/et/threads/5-laws-of-stupidity.364637/ r.
Whoops! Bonhoeffer's video is what I came across and then wanted to create some context. It's been two weeks?! thanks @deaddog !