Assessing Technology Transfer

800 Lifespans Bridge 50,000 Years

Eight hundred life spans can bridge more than 50,000 years. But of these 800 people, 650 spent then lives in caves or worse; only the last 70 had any truly effective means of communicating with one another, only the last 6 ever saw a printed word or had any real means of measuring heat or cold, only the last 4 could…

Jun 21, 2014 1 1

• history
• perspective
• time