What does the “Most Constrained” heuristic mean?

I am currently reading written by Ian Millingto and John Funge. In Chapter 2, I have some difficulty understanding the “Most Constrained” heuristic. The words in the book are as follows: Given the current state of the world, one item in a set needs to be chosen. The item chosen should be the one that would be an option for the fewest number of states. For example, a group of characters come across an ambush. One of the ambushers is wearing phased force-field armor. Only the new, and rare, laser rifle can penetrate it. One character has this rifle.When they select who to attack, the most constrained heuristic comes into play; it is rare to be able to attack this enemy, so that is the action that should be taken.…


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