Bill Gates shared his wisdom about how to solve the world’s biggest problems with readers of the Wall Street Journal. It is likely to encourage the worst instincts of the business world, which needs constantly to be reminded that human needs are more important than profit, and not everything that counts can be measured.

How do does Gates believe the world’s problems can be solved? Measurement!

Even though many researchers have ridiculed his massive investment in measuring teacher effectiveness, Bill doesn’t know it. He still thinks that if you mix a certain proportion of test scores, observations, and student surveys, you can solve the teacher quality problem. And how does he know that the problem is solved? Because test scores went up in Eagle County, Colorado.

If test scores were all there was to measuring education quality, he might have a point. But as Governor Jerry Brown stated so eloquently in his state of the state speech last week, the goal of education is not easily reduced to data.

Brown said:

“In the right order of things, education—the early fashioning of character and the formation of conscience—comes before legislation. Nothing is more determinative of our future than how we teach our children. If we fail at this, we will sow growing social chaos and inequality that no law can rectify. ”

How do you measure the fashioning of character and the formation of conscience?

Governor Brown said:

“The laws that are in fashion demand tightly constrained curricula and reams of accountability data. All the better if it requires quiz-bits of information, regurgitated at regular intervals and stored in vast computers. Performance metrics, of course, are invoked like talismans. Distant authorities crack the whip, demanding quantitative measures and a stark, single number to encapsulate the precise achievement level of every child. We seem to think that education is a thing—like a vaccine—that can be designed from afar and simply injected into our children.”

Which matters most? The young person with high test scores or the young person with character and conscience?