Tim Worstall wrote:
>>
>>I realise that you are not being entirely serious in this
>>thread......however, I feel that you have slightly missed the point
>>about marsupials. Foetal development largely takes place outside the
>>womb, in the pouch, ( the abscence of the placenta being a major
>>reason ), therefore hip size and head size are not related at all by
>>the size of the birth canal.
>>Unlike humans say, where an unusally large headed baby will produce a
>>wince in recent mothers.
>>
>>
>>
Tim,
OK, you've added one more reason for marsupial head size to not run up
against evolutionary limits: not only is greater head size not limited
by pelvis angle, but also there is the op****tunity for head size to
increase evolutionarily because of the pouch arrangement.
So, again, why do marsupials have such small brains? Why don't kangaroos
rule the planet? Or is becoming marsupial the next stage in humanity's
evolution?
Or, contrarily, is intelligence just not very im****tant in evolution's
scheme of things?
Cheers,
-dlj.
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