"Interestingly, koi, when put in a fish bowl, will only grow up to three inches.
When this same fish is placed in a large tank, it will grow to about nine inches long.
In a pond koi can reach lengths of eighteen inches. Amazingly, when placed in a lake, koi can grow to three feet long.
The metaphor is obvious. You are limited by how you see the world."
–via Vince Poscente
Wow, What a goldfish. I like it.