A tentative classification of goal-seeking behaviours.

When “goal-seeking” behaviour is considered in situations of more than the most elementary type, the problems that arise are related to those of strategies and tactics. I have attempted to show that clear-cut principles are involved, capable of mathematical treatment. It appears likely that among the factors of special importance are those of “span of foresight” and “degree of flexibility.”. The case has also been considered in which the organism faces an environment that can be characterized only in terms of probability.