A short joke to be used in discussing the history of polls and the innovations brought to the field by George Gallup. The joke was written in 2016 by Larry Lesser, University of Texas at El Paso with assistance from Dennis Pearl.
"Shorn of all subtlety and led naked out of the protective fold of educational research literature, there comes a sheepish little fact: lectures don’t work nearly as well as many of us would like to think." A quote by George Cobb (1947 - 2020) from his 1992 paper "Teaching Statistics," in Heeding the Call for Change: Suggestions for Curricular Action, ed. Lynn Steen, MAA Notes Number 22, 3-43. The quote is a well-phrased reminder that listening to lectures is not an effective way for students to learn.
A cartoon that can be used in discussing the Placebo effect. The cartoon appeared as number 1526 (May, 2015) in the web comic xkcd by Randell Patrick Munroe (http://www.xkcd.com/1526/).