Anyone with eyes has a pretty good idea that they are walking into a toxic soup. I left Delhi on the 22nd - this picture is pretty accurate:<p><a href="http:&#x2F;&#x2F;i.huffpost.com&#x2F;gen&#x2F;2343988&#x2F;images&#x2F;o-DELHI-AIR-POLLUTION-facebook.jpg" rel="nofollow">http:&#x2F;&#x2F;i.huffpost.com&#x2F;gen&#x2F;2343988&#x2F;images&#x2F;o-DELHI-AIR-POLLUTI...</a><p>Or, back in July (before things got bad) I could do maybe 10 suicide sprints in NY. Then I flew into Delhi and was down to 4 - breathing was just that hard.<p>I know there are lots of jokes about Biharis, but they aren&#x27;t as stupid as you are making them out to be. They move to Delhi with good but imperfect information about both the pollution and the economic opportunity.<p>I&#x27;m all in favor of pollution taxes and internalizing externalities. I&#x27;m just saying that even in spite of that, the economic gains seem to drastically outweigh the health penalties as evidenced by millions of people moving <i>towards</i> the pollution.