Understanding through Discussion


Welcome! You are not logged in. [ Login ]
EvC Forum active members: 64 (9073 total)
550 online now:
Aussie, CosmicChimp, jar, PaulK, Phat, Tangle, Tanypteryx (7 members, 543 visitors)
Newest Member: MidwestPaul
Post Volume: Total: 893,308 Year: 4,420/6,534 Month: 634/900 Week: 158/182 Day: 38/27 Hour: 0/2

Announcements: Security Update Released


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Some abiogenesis considerations
Dr Adequate
Member (Idle past 290 days)
Posts: 16112
Joined: 07-20-2006


Message 25 of 46 (338463)
08-08-2006 2:29 AM
Reply to: Message 14 by randman
07-29-2006 7:31 PM


Re: a quick comment
Also, note that evo claims of convergent evolution argue that different and similar forms arise via environmental pressures and so evos already refute ironically the claim that such similarities must be the result of a common ancestor.

Fortunately, scientists know the difference between shared-acquired and shared-derived characterestics.

Take DNA or actually any commonality. There is no reason at all to discount environmental aspects, is there, for these commonalities?

Yes, when there is no common environmental pressure to account for similarities. For example, the radius-ulna arrangement in the forelimbs of tetrapods cannot have arisen in the forelimbs of humans, bats, horses, seals, etc as a result of common adaptation to a common environmental challenge, since they are not used for the same purpose. By employing a sufficiently large number of morphological criteria of a like nature, the chances of a coincident resemblance can be reduced effictively to 0.

In all of recorded history, no science has ever been overturned by an amateur sitting in an armchair declaring that he doesn't understand it. Comparative morphology will be no exception.


This message is a reply to:
 Message 14 by randman, posted 07-29-2006 7:31 PM randman has taken no action

Newer Topic | Older Topic
Jump to:


Copyright 2001-2018 by EvC Forum, All Rights Reserved

™ Version 4.1
Innovative software from Qwixotic © 2022