On Friday, April 22, 2005, at 10:18 PM, A. Lal wrote: >> Prove that it ain't so, then! > > You've got it backwards. If I assert that I can just flap my arms and > fly, you do not need to prove that I cannot do it; rather *I* have to > show you I *can* do it. I never said that it (i.e., devising a perpetual motion machine) CAN definitely be done - I merely said that there's no proof that it CAN'T. A.