Bots and Simulations > Evolution and Internet Sharing Sims

I have an idea

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Numsgil:
I think the idea of a "frontier" is key.  It's kind of like the books later in the Dune series.  Where something(s) odd comes to known space from the fringes of the unexplored galaxy.  It's on the very edges of survivability that neat things happen, and then those neat things are brought back to the main herd.

Not sure how to set up such a frontier, but I it has to do with extreme conditions and areas of relative ease.  Maybe two different simulated environments networked together.

EricL:
We are saying the same thing.  A frontier is just a means to create steep environmentally-based, directional selection pressures which can serve to accelerate the fixation of benificial mutations through population bottlenecking, but only if the geneic diversity is there to begin with.    The same exact thing is true of preditors and shepard bots. Think in tems of puncuated equalibrium - cycles, good times and bad.  Genetic drift creates diversity then positive selection operates on it.   But you have to have the diversity for selection to operate, which comes from compounded mutations, which as above, takes time and or larger populations and can't occur too frequently or things turn to mush.  So, you can climb mount improbable in a series of environmentally or preditor-inspired wind sprints (followed by resting periods to build up diversity) or you can utilize a slower, somewhat constant walking pace, but the time it to takes you to get to the top (actually a local maximum) is largely going to be a function of the path you take, not whether you sprint or walk.  The right selection pressures, be they punctual or gradual, keep the path shorter and insure the turns you take are always climbing (as opposed to wandering around in valleys and medows) but the slope has to be always gradual and the maximum altitude you can gain per unit time in the end is going to be limited by a time * population * mut rate equation.

Peter:
I don't think you can speed up evolution, if you look in real live how big the chance on a mutation is, well it's really really small. Duplicating DNA for example is an extremely complecate process with different checkups that will check if the dna is correctly copied. Dna consists out of 2 strings if one is wrong it will be seen.
The reason there are still mutations is becouse the DNA is very often copied. How many cells do you think there are in your body. I think the chance that if you'd copy a file from one place to another . The chance on a wrong bit is higher then with DNA a wrong basepair. Rather strange becouse DNA works on molecule level and computers works on still a 'little' bigger level. Also becouse computers only use 0 and 1(binair). DNA uses A, T, G and C (Quaternary)

There is no single specie who speeds up mutation rates to speed up evolution. The lower the better. For every ancetor that has better DNA there will be more with a worse DNA and an huge ammount of death ofspring.

The best for evolution are really small chances of mutation. Althrough I have so say, the rusian space station 'Mir' had much trouble with aggresive fast reproducing bacteria and fungus. Becouse of the radiation coming out of space having higher mutations.

Elite:
The best method I have come across to "speed up evolution" is to cap the maximum bot age.

Generation time is reduced, and genes that confer benefits at a gene-level (ie. that benefit offspring) are selected over genes that benefit individual bots.

Although it is a little artificial, I've has excellent results with this strategy.

I don't think it's 'speeding up' evolution so much as disadvantaging 'bad' (from our and genes' PoV) mutations.

To speed up DB evolution proper, get a faster computer

shvarz:

--- Quote ---There is no single specie who speeds up mutation rates to speed up evolution. The lower the better.
--- End quote ---

Peter, this is incorrect. In order for evolution to occur, diversity must be generated through mutations. If the mutation rate is very low, then new variants are not produced and evolution cannot proceed.

Also, bacteria are known to speed up their evolution when living conditions become extreme. They switch to a less accurate DNA polymerase, which introduces a lot of errors in the hope that they will generate a mutation that would help them to cope with changed conditions. However, it is a desperate and a last-resort mechanism.

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