Not to belabor the point, but here is one more thing about Canadian hockey and the claims in Outliers. Ok, two more things.
In Canadian minor hockey, the age divisions are as follows:
* Mite (ages 3-4)
* Tyke (ages 5-6)
* Novice (ages 7-8)
* Atom (ages 9-10)
* Peewee (ages 11-12)
* Bantam (ages 13-14)
* Midget (ages 15-17)
* Juvenile (ages 18-20)
Born early or not, every kid will enter the next age group and play against other kids a year older.
Second, taking the very best ever (i.e., the definition of outlier), Wayne Gretzky, we see this (from Wikipedia): “Gretzky’s first team, at age six, was a team of ten-year-olds, starting a pattern where Gretzky always played at a level far above his peers through his minor hockey years.”