Final answer:
A heuristic is a general problem-solving strategy or mental shortcut that is used to solve problems. It is a rule of thumb or a shortcut that saves time and energy when making decisions. Heuristics are often used when the brain defaults to quick thinking based on a pattern or rule of thumb, known as a cognitive bias.
Step-by-step explanation:
A heuristic is a general problem-solving strategy or mental shortcut that is used to solve problems. It is a rule of thumb or a shortcut that saves time and energy when making decisions. Heuristics are often used when the brain defaults to quick thinking based on a pattern or rule of thumb, known as a cognitive bias. It is important to be aware that heuristics are not always the best method for making rational decisions.