A real example of this would be Alka-Seltzer(dissolvable antacid/pain medicine). An ad showed two tablets in the glass, and they saw a large increase in sales.

A real example of this would be Alka-Seltzer(dissolvable antacid/pain medicine). An ad showed two tablets in the glass, and they saw a large increase in sales. Nowadays they simply come in packets of two. https://en.wikipedia.org/wiki/Alka-Seltzer#Marketing https://en.wikipedia.org/wiki/Alka-Seltzer#Marketing http://www.snopes.com/business/genius/alka-seltzer.asp http://www.snopes.com/business/genius/alka-seltzer.asp