This document discusses how people learn, retain, and recall information. It notes that 83% of learning is through sight, 11% through hearing, and smaller percentages through other senses. People retain 10% of what they read, 20% of what they hear, 30% of what they see, 50% of what they see and hear, and 70-90% of what they say and do. Recall is 70% after 3 hours, 10% after 3 days when information is told alone, but increases to 72% and 20% respectively when shown as well. Blending telling and showing yields 85% recall after 3 hours and 65% after 3 days. The document concludes with 10 commandments for effective presentations, emphasizing planning