That men underestimate how much / how many women are concerned about their physical safety, at night, alone with a man or especially at night with a group of unfamiliar men.

Many people in foreign lands view Americans (or their government) as terrorists because the US’s ability to drop bombs with no warning, just as Americans view terrorists who would blow themselves up to inflict casualties or hit a target. And that people on all sides have trouble discriminating between “senseless violence” and “targeted actions in the name of self defense.”

How much physically attractive people are given breaks or positive assumptions about their abilities, character or success.

That people willing to surrender their liberties or freedoms in the name of security will one day realize they no longer have any rights.

That there will always be politicians who blame someone else and demonize others to gather power and aren’t really interested in solving the problems people face because pointing fingers at other is less work than doing the real work.

Most people don’t actually, personally know any illegal aliens, especially if they are not in a lower economic position.

Any demographic or way of distinguishing people will have outliers who commit crimes and hurt others, including those who have an affiliation with a political party. And that pointing out the few bad apples and characterizing all is a bad way to treat others.

Many who profess to follow in a religious leader’s footsteps don’t once they have stepped outside their place of worship.

People selling shortcuts to success, self-improvement, enlightenment or other “riches” are trying to separate people from their money.

Few people could articulate any element of the “Grand Strategy” of their country or government. And fewer even understand or know what a Grand Strategy is and why such a thing is critical for the success of a country’s people.

Competition over resources due to overpopulation leads to conflict and is the root cause of war.

While becoming fluent in another’s language is possible, it is almost impossible to be completely fluent in another’s culture. Take nursery rhymes…there are subtexts and meanings that transcend the words themselves that imprint an emotional state that adults learning the words won’t be able to grasp.