>Also, the evolution theory may be subject to some revisions, but so far, it is the best explanation there is, for the origin of life. There are simply no serious alternative explanations, to the question, how life originated. The theory of evolution will surely be revised, but I think that it is idle to deny the basic idea, namely, that complex life forms evolved from simpler ones.

Hi Hilmar,
I may be a bit late in asking (facitiously, of course) but exacty what is a "theory" anyway?

Steven-