Isn't there 9 innings in baseball?
11 knots... was about the average speed of a sail boat.
Kite... needs 11 bow for flight.
15 overs... (if you watch one day cricket that might make sense but the first 15 overs the players are restricted in their positions)
18 is about the age kids are considered Road worthy, They also gain the Right to Vote in Australia..
21 Under-aged for cheaper car insurance (25 it starts coming down).
Lets Get those ideas rolling we might find some others where we have common threads.
Alex
