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| Time:  I do not consider time to be a force of nature.  
You can't manipulate it (slow it down or speed it up. nether travel forward 
or backward through it). There is no temporal particle, or is it a forth 
dimension.  However I do believe time exist as a "concept".  For 
example I can use time in a mathematical formula to predict what moment two 
trains leaving different stations traveling towards each other at different 
speeds will intersect each other (giving nothing perfect, I can predict better 
then random chance).  If time is not a concept, then how can I predict the 
future (where two trains intersect) with better then random chances?  
 Just as Economics is not a force of nature.  That is: there is no 
particle (photon, graviton) that holds the force of economics, or is it a 4th 
dimension of matter.  But it is a "concept".  You can use an economic 
model to predict the future better then random chance. I forgot to add this part onto my last e-mail, Pat ----------------------------- |