President Barack Obama, a White Sox fan, who chatted with the pitcher in the clubhouse of the All Star game last week before throwing out the first pitch, is left handed like Buehrle.

VOA: standard.2009.07.24

Like how can you possibly figure that out with actually compelling a machine to do it for you and sure enough we chatted for a few moments, I kind of gently pointed out well it's kind of like problem 7 last year.

就好像去逼计算机为你做这件事,就能解决问题一样,我们确实谈过这个问题，我委婉地告诉他,这种情况与我们去年讲过问题7类似。

哈佛公开课 - 计算机科学课程节选