Can you spot what is wrong this picture?
If you go over to the blog, panopticist there is a posting talking about it: Mad Men Gets All the Details Right—Except One
I was surprised that I actually found one error myself, but the other is subtler. I was also fascinated by the discussion of a font that we — ok, I — use all the time: Arial.
After you read this posting, the ones below are worth a read, too.
Smart People I Know 