Heuristics are conventions specified to help you solve problems. When an issue is large or complex, and the optimal solution is unclear, employing a heuristic lets you start making progress
towards a resolution even though you can’t envision the entire path from your beginning point. Suppose your goal is to drive to the store, but there’s no road to follow. An illustration of a heuristic would be: Head directly toward the store till you reach an obstacle you can’t cross.