Lies, Damn Lies, and Dashboard Gauges

Snippet from the linked article:

[Editor’s Note: I worked on the cooling system of the Jeep Wrangler JL, and can tell you that I sat in on a meeting during which we decided how the gauge would behave based on coolant temperature. Yes, “decided,” because the gauge didn’t just go up when things got hot and drop when things got cool, it behaved in a way that reduced the chance of the customer being concerned — for example, it might stay in the “normal range” during a short spikes at, say, a red light at the top of a steep hill that someone towed a trailer up. Was the temperature higher than normal? Sure. But you wouldn’t know it based on the gauge. -DT].