An alert reader pointed me at a recent post over at Uncommon Descent by a guy who calls
himself "niwrad", which argues (among other things) that life is
non-computable. In fact, it basically tries to use computability
as the basis of Yet Another Sloppy ID Argument (TM).
As you might expect, it's garbage. But it's garbage that's right
up my alley!
It's not an easy post to summarize, because frankly, it's
pretty incoherent. As you'll see when we starting looking
at the sections, niwrad contradicts himself freely, without seeming
to even notice it, much less realize that it's actually a problem
when your argument is self-contradictory!
To make sense out of it, the easiest thing to do is to put it into the
context of the basic ID arguments. Bill Dembski created a concept called
"specified complexity" or "complex specified information". I'll get to the
definition of that in a moment; but the point of CSI is that according to
IDists, only an intelligent agent can create CSI. If a mechanical process
appears to create CSI, that's because the CSI was actually created by an
intelligent agent, and embedded in the mechanical process. What our new friend
niwrad does is create a variant of that: instead of just saying "nothing but
an intelligent agent can create CSI", he says "CSI is uncomputable, therefore
nothing but an intelligent agent can create it" - that it, he's just injecting
computability into the argument in a totally arbitrary way.