I went back to school for a day – and discovered some very unsettling facts about learning
I thought my articles and radio shows made an impact on people. A notice in the staffroom suggested otherwise

TL;DR
- The author led a "Deep Learning Day" at a secondary school, feeling they learned more than they taught.
- A notice in the staffroom outlined information retention percentages for different learning methods.
- Retention rates: 10% read, 20% hear, 30% see, 50% see and hear, 70% discuss, 80% personal experience, 90% teach.
- The author finds these statistics disheartening for professions involving reading and speaking.
- The high retention rates for discussion and personal experience are linked to echo chambers and the solidification of personal truths.