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Re: *Mauisaurus* vs large pterosaurs

2009/10/7 don ohmes <d_ohmes@yahoo.com>:
> 1) "If size is an advantage, then size will increase until further size 
> increase ceases to be advantageous."
> 2) "Things just get bigger."
> I consider statement #1 to be useful and valid, but not #2. For many years, I 
> thought statement #1 _was_ Cope's Rule, and couldn't understand the 
> controversy. Then I found that #2 is a paraphrase of Cope's notorious 
> rule-of-thumb.

#2 seems ugly because it is less explanatory, but this does not denies
the possibility that the proposed pattern is true. You can observe
some pattern before you fully understand its causes, for example,
annual cycles were recognized before understanding the Earth orbit
around the sun. The actual causes of a pattern (if actually true, I do
not know if Cope's Rule is) may not yet be completely known.