Originally Posted by jimbob
Southwind, do you accept that even wioth your "let the maket decide" evolutionary algorithm story, each Successfull variant is chosen by an individual customer, who is an intelligent agent.
Yes, I do, but I fail to see the significance of 'intelligent agent'. Is a cheetah not an 'intelligent agent'? As I wrote above, what's the difference, in principle, between a punter assessing the pros and cons of one consumer product over another and a cheetah assessing the 'pros and cons' of one particular animal for dinner over another?
The cheetah doesn't decide what form its prey will take, the sam and ollie story, and its variants is simply an evolutionary algorithm, optimising towards what will sell.
The "parents" of the subsequent generations are selected on their "saleability". There is intelligent selection of the "trait" of saleablility, because it has been decided to only copy those that sell. That is an arbitary ,intelligently defined sepecification.
Originally Posted by jimbob
The selection is thus intwo parts,: Firstly by many different intelligent agents, and then according to other selection criteria to cull out the failures. In any system with finite resources the second is also vital. Every realistic system as finite resources.
Can you please clarify the first part. Are you alluding to consumer product designers/manufacturers or consumers? Also, I'm not sure why you're emphasising the finiteness of resources as important. Can you expand on this too please.
As quoted "copy those designs which sell", you are begging the question as to "sell in what timeframe". The default will be sell in an indefinite timeframe.
Suppose you have a showroom with 500 sales slots, you are lucky in the first generation and 50% sell within 20 minutes. The rest remain, preventing you from using 250 slots. Without specifying a timescale, these could remain, blocking half your slots for eternity, you now only have 250 sales slots available.
The next generation, being more like the parents than grandparents, 60% sell quickly but 40% remain. You now are down to only 100 slots, and the rate of "evlution" is beginning to slow.
The next generation, again is an improvement, and 64% sell, you are now down to 64 slots, and 446 unsaleable variants that are waiting for "euthaniasia", or to be sold, whichever is quicker.
Every time a random mutation stops the variant selling, it removes that particular sales slot from becomming available for further use.
The solution is obviously to impose an arbitary lifetime, but that is another intelligent intervention and intelligently imposed criterion, wehich is absent from evolution with a self-replicating system, as it either reproduces or it doesn't within its lifetime. Nobody needs to say that an orgainsm is living too long without reproducing, lifetime is another evolved trait.
Does this expalain what I mean?
<derail>
There is of course no evolutionary pressure for organisms to be able to reproduce much beyond the age by which they are likely to have died from other "natural causes".
Indeed, given that any such "effort" would be likely to use up precious resources, it would be more avantageous to have a similar lifetime to that, and have the surplus devoted to more successful breeding within the likely lifetime.