I predicted that if I purchased a mango and a peach ice cream, she would be incapable of differentiating. And, by extension, either would be equivalent to apricot. “They’re completely different,” she said. “If you can’t tell mango from peach, that’s your problem.” Now we had a simple objective disagreement that could readily be resolved experimentally. I ordered a minimum-size ice cream in each of the two flavors. But by the time the serving person had prepared them, and I turned to ask Elizabeth to close her eyes for the experiment, she had gone. So much for “evidence-based.” And for computer
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