Chinajohn: If you think about it, it absolutely has to be the way it is. At the moment the slowest you can get is 5.0 but in theory at least, WGT can introduce even slower equipment at 5.1 or even 6. However if the slowest was 0 then they cannot introduce anything slower, without going into negative numbers.
I know what the new number system is and I can understand why people are getting confused.
This is a great explanation... Well Done m8!
-Roger