In a way that uses practical problem-solving methods and trial-and-error rather than following fixed rules to find solutions quickly.
From 'heuristic' (Greek 'heuriskein' meaning to find/discover), with '-ally' adverbial suffix; describes the manner of applying discovery-based methods.
Computer programmers use heuristics all the time—when you ask Google Maps for directions, it doesn't check every possible route; instead it heuristically estimates the fastest path using shortcuts and pattern-matching.
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