However, it’s crucial to make the right call about whether to use an algorithm or a heuristic in a specific situation. This is why the Google experiment with forty-one shades of blue seems so foreign to me, accustomed as I am to the Apple approach. Google used an A/B test to make a color choice. It used a single predetermined value criterion and defined it like so: The best shade of blue is the one that people clicked most often in the test. This is an algorithm. At Apple, we never considered the notion of an algorithmically correct color. We used demos to pick colors and animation timings,
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