The Gadfly

The Gadfly

Tools

10 Mental Tools for Clearer Thinking

Sharpen your thinking with these timeless principles.

Frederick Alexander's avatar
Frederick Alexander
Feb 13, 2026
∙ Paid

A concise guide to ten well-known mental tools – from Occam’s Razor to Goodhart’s Law – designed to help you think more clearly and avoid common errors in reasoning.

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