The Hoover Institution’s Thomas Sowell takes no prisoners in his column about the “gender pay gap.”

It is a statistical fraud when President Obama and other politicians say that women earn only 77 percent of what men earn — and that this is because of discrimination.

It would certainly be discrimination if women were doing the same work as men, for the same number of hours, with the same amount of training and experience, as well as other things being the same. But study after study, over the past several decades, has shown repeatedly that those things are not the same.

What should you know about differences in pay?

Although comparing women and men who are in fact comparable is not easy to do, when you look at women and men who are similar on multiple factors, the sex differential in pay shrinks drastically and gets close to the vanishing point. In some categories, women earn more than men with the same range of characteristics.

If the 77 percent statistic was for real, employers would be paying 30 percent more than they had to, every time they hired a man to do a job that a woman could do just as well. Would employers be such fools with their own money? If you think employers don’t care about paying 30 percent more than they have to, just go ask your boss for a 30 percent raise!