Why are TED talks 20 minutes?

Related questions

1. Do TED talks have a time limit?
2. What is a TED Talk considered?
3. How long is the average TED talk?
4. Is Ted talk an academic source?
5. How much does it cost to attend a TED talk?
6. How did Ted talks start?
7. How much to go to Ted talk?
8. Will Stephen TED talk?
9. Where are TED talks?
10. What makes a good TED talk?

Tags

1. #serious
2. #explained
3. #attention
4. #incredibly
5. #works
6. #enough
7. #chris
8. #anderson
9. #format
10. #curator
11. #turns
12. #people
13. #thinking
14. #success
15. #length
16. #online
17. #organization
18. #short
19. #reasons
20. #behind
21. #minutes