What else is to be done? Trade protection won't work. You can't block electrons from crossing national borders. Because U.S. labor cannot compete on price, we must reemphasize the things that have kept us on top of the economic food chain for so long: technology, innovation, entrepreneurship, adaptability and the like. That means more science and engineering, more spending on R&D, keeping our capital markets big and vibrant, and not letting ourselves get locked into "sunset" industries.

In addition, we need to rethink our education system so that it turns out more people who are trained for the jobs that will remain in the United States and fewer for the jobs that will migrate overseas. We cannot, of course, foresee exactly which jobs will go and which will stay. But one good bet is that many electronic service jobs will move offshore, whereas personal service jobs will not. Here are a few examples. Tax accounting is easily offshorable; onsite auditing is not. Computer programming is offshorable; computer repair is not. Architects could be endangered, but builders aren't. Were it not for stiff regulations, radiology would be offshorable; but pediatrics and geriatrics aren't. Lawyers who write contracts can do so at a distance and deliver them electronically; litigators who argue cases in court cannot.

But even if we do everything I've suggested -- which we won't -- American workers will still face a troublesome transition as tens of millions of old jobs are replaced by new ones. There will also be great political strains on the open trading system as millions of white-collar workers who thought their jobs were immune to foreign competition suddenly find that the game has changed -- and not to their liking.

That is why I am going public with my concerns now. If we economists stubbornly insist on chanting "Free trade is good for you" to people who know that it is not, we will quickly become irrelevant to the public debate. Compared with that, a little apostasy should be welcome.