system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do cars use a visual measurement for the engine's temperature rather than degrees?
gpt
This is a classic example of good instrumentation design. Must people don't know what a "good" temperature is, so showing the actual number requires them to learn and think more. A gauge that reflects meaningful analysis like cold, normal, hot,  and "too hot" is actually more useful to most operators.