This article should be change, because the introductory sentence:
"In the physical sciences, an active transformation is one which actually changes the physical state of a system and makes sense even in the absence of a coordinate system... ."
is not clear. If author means "transformation" of coordinate system in physica (which seems likely from his text below)it's not correct. The change of coordinate systems never change the "physical state". If he means "change" of physical system, it should be expain in details (thermodynamics? mechanics?), otherwise it looks completely unclear. There is no any physical example. — Preceding unsigned comment added by Gennady Kovalev (talk • contribs) 20:41, 2 June 2006 (UTC)
