How does cognitive fixation affect individuals solving problems?

A cognitive fixation is a condition where upon a stressful situation, we tend to overlook the simplest answers when it's right in front of us. Let's say you're in a sinkin ship, sometimes people tend to overlook that we can use chairs as floating devices or as paddles. Cognitive fixation represents a strong setback at the time where quick thinking is required.

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first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

it gave them more rights