Artificial Life Forms Evolve Basic Memory, Strategy
Calopteryx notes a New Scientist piece on how digital organisms in a computer world called Avida replicate, mutate, and have evolved a rudimentary form of memory. Another example of evolution in a simulation lab is provided by reader Csiko: "An evolutionary algorithm was used to derive a control strategy for simulated robot soccer players. The results are interesting — after a few hundred generations, the robots learn to defend, pass, and score — amazing considering that there was no trainer in the system; the self-organizing differentiated behavior of the players emerged solely out of the evolutionary process."
Organisms can perfectly draw energy directly from the sun, and animals and humans still do (such as vitamine D production). The point is it wouldn't be energy efficient for a moving organism. A tree can grow huge, but a moving tree (the animal) couldn't. Surface, size, gravity, all that. Then it's much more efficient to get the contained energy from other organisms by eating them.
Meh, only idiot teenagers point out typing errors to foreigners like they are stupid.