51 ideas.............................

 29. Occam’s Razor: If there are multiple explanations for why something happened and they are equally persuasive, assume the simplest one is true. In the search for truth, remove unnecessary assumptions. Trust the lowest-complexity answer.

30. Hickam’s Dictum: The opposite of Occam’s Razor. In a complex system, problems usually have more than one cause. For example, in medicine, people can have many diseases at the same time. 31. Hormesis: A low dose of something can have the opposite effect of a high dose. A little bit of stress wakes you up, but a lot of stress is bad for you. Lifting weights for 30 minutes per day is good for you, but lifting weights for 6 hours per day will destroy your muscles. Stress yourself, but not too much. 32. Robustness Principle: Be conservative in what you do, be liberal in what you accept from others. It’s a design guideline for software and a good rule for life: Hold yourself to a higher standard than you hold others to. 33. Legibility: We are blind to what we cannot measure. Not everything that counts can be measured, and not everything that can be measured counts. But people manage what they can measure, so society repeats the same mistakes. 34. Horseshoe Theory: Extreme opposites tend to look the same. For example, a far-right movement and a far-left movement can be equally violent or desire a similar outcome. People on both sides are more similar to each other than they are to people in the center.

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