Why i2c lines are open drain?

Related questions

1. What is the maximum distance of the i2c bus?
2. Where is Arduino used?
3. What is RX TX?
4. How does the Arduino board work?
5. What is the meaning of TX and FX?
6. Does Arduino have i2c?
7. What is two wire interface?
8. What is i2c communication in Arduino?
9. How long will an Arduino run on a 9v battery?
10. What is a Tx signal?

Tags

1. #drain
2. #realize
3. #master
4. #these
5. #reason
6. #characteristic
7. #signals
8. #sawtooth
9. #drive
10. #slave
11. #thing
12. #leave
13. #devices
14. #known
15. #collector
16. #world
17. #first
18. #lines