Correlation between driving skill and practice field availability

[Basel A]

Originally Posted by Chris is me

How can you guys say that correlation doesn't imply causation with regards to practice time and driving skill? Of course practice time will increase driving skill.

While there is causation, it's not the correlation that proves it. It's the reasons that are so obvious, you don't need to list them. The OP wanted to show that great teams have practice fields; that doesn't mean much. I think he simply needs to explain those reasons and show how driving skill is ultimately an important factor in success.