Most people look. Holmes observed. There's a difference. The Deductivist is a weekly newsletter teaching the exact observation and deduction techniques used by Sherlock Holmes — grounded in behavioural science, applied to everyday life. Every issue: one technique, the science behind it, a real case study, and one exercise you can try the same day. Start with the free guide: 25 things your shoes reveal about you. It takes 10 minutes to read. You will never look at people the same way again.

Hey Product Hunt! 👋 I built The Deductivist because I kept reading about Sherlock Holmes's observation method and thinking: this is actually just applied behavioural science. So I decided to teach it properly. Each week I take one technique — reading hands, posture, proxemics, micro-expressions — break down the cognitive psychology behind it, and give you one exercise to try that day. The free guide (25 Things Your Shoes Reveal About You) is based on the same method Holmes used in A Study in Scarlet. It is also, I should mention, unsettlingly accurate. Two questions for the community: 1. Have you ever caught yourself making a deduction about someone — and been right? 2. What would you most want to learn to read — body language, micro-expressions, or something else? Would love to hear what you think. 🔍

The Deductivist

Learn to read people like Sherlock Holmes

Learn to read people like Sherlock Holmes