Doesn’t University of Pennsylvania economist Guido Menzio know that you should never do Al Gebra on a plane? From FB: Unbelievable… Flight from Philly to Syracuse goes out on the tarmac, ready for takeoff…

Then it’s delayed for 1 1/2 hours because a woman thought the algebra looked like Arabic writing.

Source: Economist removed from plane for algebra, flight delayed 1.5 hours / Boing Boing