Frequently, I had to pick one Norn up, placing it elsewhere in Albia, just to interest another Norn in food. I saw 4 Norns, all of whom I taught to eat, starve, literally to death, in the garden playing with each other while surrounded by food. I expect Norn behaviors to have priorities with eating having a high value. If eating does have a higher priority for Norns, I never noticed. Using both genetic algorithms and neural networks, Creatures uses artificial life, rather than artificial intelligence to create complex behaviors for the Norns.
Artificial intelligence is very specific, given context.
Medical diagnostic programs use artificial intelligence to produce diagnoses from patient s symptoms. Artificial life, however, is very general. A researcher may use artificial life to simulate the behavior of a bug using basic needs, like food, rest and reproduction. The prioritized needs of the bug define the bug s behavior. Neural networks are a class of adaptive algorithms.