Solving a problem in a hundred years is, practically speaking, the same as not solving it at all.

If crime is going down, you shouldn't be increasing resources for crime prevention. Or you should be taking note of what has worked and concentrate the crime-prevention methods on policies that have a track record of success.

Racism, because it favors color over talent, is bad for business.

We adults protect ourselves with laws, police, workplace regulations and social norms and there is no conceivable reason why children should be left more vulnerable, other that laziness or callousness in considering what life is like from their point of view.

The likelihood that inborn differences are one contributor to social status does not mean that it is the only contributor.

It is true that raids and battles killed a tiny percentage of the numbers that die in modern warfare. But in tribal violence, the clashes are more frequent, the percentage of men in the population who fight is greater, and the rates of death per battle are higher.

Reading is a technology for perspective-taking. When someone else's thoughts are in your head, you are observing the world from that person's vantage point.