We should not get too fixated about our inability to measure underemployment, because it is probably sufficiently significant for us to be able to see it without needing to have the confidence to say that underemployment is this number rather than that number—it is a big enough issue, although I think that it was Deming who said, “If you can’t measure it, you can’t improve it.”Certainly, as we respond to the challenge of underemployment, we have to have better numbers in front of us. Professor Fred P...