Came across this ages ago but http://www.doctormadscience.com/video/p ... periments/
brings back my primary school days
This offering maybe right, or wrong, but it is one, the other, both, or neither!
Blog, - Some Suttas Translated, Ajahn Chah.
"Others will misconstrue reality due to their personal perspectives, doggedly holding onto and not easily discarding them; We shall not misconstrue reality due to our own personal perspectives, nor doggedly holding onto them, but will discard them easily. This effacement shall be done."