Furthermore, there’s good reason to believe that all such estimates are too pessimistic. There are many cost-saving efforts in the proposed reform, but nobody knows how well any one of these efforts will work. And as a result, official estimates don’t give the plan much credit for any of them. What the actuary and the budget office do is a bit like looking at an oil company’s prospecting efforts, concluding that any individual test hole it drills will probably come up dry, and predicting as a consequence that the company won’t find any oil at all  when the odds are, in fact, that some of the test holes will pan out, and produce big payoffs. Realistically, health reform is likely to do much better at controlling costs than any of the official projections suggest.

Which brings me to the third myth: that health reform is fiscally irresponsible. How can people say this given Congressional Budget Office predictions  which, as I’ve already argued, are probably too pessimistic  that reform would actually reduce the deficit? Critics argue that we should ignore what’s actually in the legislation; when cost control actually starts to bite on Medicare, they insist, Congress will back down.

But this isn’t an argument against Obamacare, it’s a declaration that we can’t control Medicare costs no matter what. And it also flies in the face of history: contrary to legend, past efforts to limit Medicare spending have in fact “stuck,” rather than being withdrawn in the face of political pressure.

So what’s the reality of the proposed reform? Compared with the Platonic ideal of reform, Obamacare comes up short. If the votes were there, I would much prefer to see Medicare for all.

For a real piece of passable legislation, however, it looks very good. It wouldn’t transform our health care system; in fact, Americans whose jobs come with health coverage would see little effect. But it would make a huge difference to the less fortunate among us, even as it would do more to control costs than anything we’ve done before.

This is a reasonable, responsible plan. Don’t let anyone tell you otherwise.