Do we really need this article? Is it Psy? Im leaving it cos there is plenty of mathematical Psy, but this seems far too basic for that. Mostly Zen Baby tao (talk) 22:47, 26 July 2006 (UTC)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.