If you sit on a thumb tack, the pain associated with the tack is a negative reinforcer, which causes a certain behavior _ jumping upward.
12.
The Reeds'son, Billy Ray Reed Jr ., died the evening of July 9 because a thumb tack-sized hole in his heart prevented him from breathing.
13.
One student " had taken a photo of George Bush out of a magazine and tacked the picture to a wall with a red thumb tack through his head.
14.
Magicians no longer saw their assistants in half; instead, the beautifully tan Siegfried _ or is it Roy ? _ impales himself on what appears to be a giant thumb tack.
15.
He found a recipe of black powder, a metal pipe, a clothespin, and thumb tacks on the Internet, they say, and then put them in a box and shipped them off to Marquis.
16.
A "'thumb tack "'( North American English ) or "'push pin "'is a short pin used to fasten items to a wall or board for display and intended to be inserted by hand, generally without the assistance of tools.
17.
However, there are experiments that are not easily described by a sample space of equally likely outcomes for example, if one were to toss a thumb tack many times and observe whether it landed with its point upward or downward, there is no symmetry to suggest that the two outcomes should be equally likely.
18.
However, there are experiments that are not easily described by a set of equally likely outcomes & mdash; for example, if one were to toss a thumb tack many times and observe whether it landed with its point upward or downward, there is no symmetry to suggest that the two outcomes should be equally likely.
19.
The website " The A . V . Club " made fun of the uselessness and blandness of Oprah's 2007 list by posting a feature called'Oprah's Favorite Thing or Symptom of Clinical Depression ? " The 2008 decision to use inexpensive gifts drew jokes from " Jimmy Kimmel Live ! ", including a mash-up that featured Winfrey supposedly giving away thumb tacks, to a much-dismayed audience.
