What does learning mean in Google Adwords?

Related questions

1. What is AB testing in AdWords?
2. What are conversions in Google AdWords?
3. Do paused keywords affect quality score?
4. Does Google AdWords work for small business?
5. How long does it take for Google ads to live?
6. Does Google AdWords really work?
7. How are ads ranked on Google?
8. Are Google Ads Free?
9. How does pay per click work?
10. How much does it cost to get Google AdWords certified?

Tags

1. #strategy
2. #starts
3. #performance
4. #system
5. #definition
6. #gather
7. #create
8. #significant
9. #needs
10. #change
11. #after
12. #takes
13. #facebook
14. #learning
15. #optimize
16. #google
17. #existing