[caption id="" align="alignright" width="300" caption="Cornell Professor Brian Wansink's study showed that people overpour into short, squat glasses by 20 to 30 percent, compared with tall, thin glasses, probably because of the vertical-horizontal optical illusion that people consistently perceive vertical lines as longer than horizontal ones of the same length. Copyright © Cornell University"][/caption] When pouring liquor, even professional bartenders unintentionally pour 20 to ...