George Will has the courage to say what the people who aren't thinking are thinking:

There will be "some impact," Will declared. "And I think this adds to my calculation — this is very hard to measure — but it seems to me if we had the tools to measure we'd find that Barack Obama gets two votes because he's black for every one he loses because he's black because so much of this country is so eager, a, to feel good about itself by doing this, but more than that to put paid to the whole Al Sharpton/Jesse Jackson game of political rhetoric."

Perhaps if it's hard to measure, and you're a conservative columnist prone to gullibility, you should back off and wait until there's evidence.