[David]> Dinosaurs...can't...[think] about an earth, its history, its ability 
to> contain fossils, etc. That takes culture...Dinosaurs would not have 
conceived> of or experience any 'earth'. 'Earth' is a complex concept, and 
needs more> than an exerience of jumping up and down on something flat...When 
we say, e.g., "dinosaurs weighed over 2 tons on earth 100 million years ago",we 
are not claiming dinosaurs had the concepts of earth, numbers, time, 
scales,etc.  That statement makes sense & is true or not, because WE have those 
concepts.If dinosaurs did weigh over 2 tons, that is a measure of the 
gravitational pull ofthe earth that they experienced.Craig
 
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