Let's take a small creature, say a fruit fly or a jumping spider. We can probably agree that they have tiny brains (if in the shape of some centralized brain, t

Let's take a small creature, say a fruit fly or a jumping spider. We can probably agree that they have tiny brains (if in the shape of some centralized brain, that is). a) Would you say it shows any kind of intelligent behavior? For a flexible definition of "intelligent", along the lines of "problem-solving ability". b) Would you say such behavior is pure instinct, 'pre-programmed', incapable of learning / evolving / adjusting to a changing environment? c) Would you say that (given time) science is incapable of figuring out how such tiny brain works? Or produce a model that shows similar behavior? Now take it up a few notches. Say the brain of a mouse. Then onto brains of bigger mammals & humans. I think you can see where this is going... Granted, "global collapse" scenario does have a non-0 probability.