There seems to be great confusion with this variable. I spoke with CheeToS about it, and it seems not even he is certain. I suppose no one has asked stefan about it ((
)). So, I guess we could have an open discussion on it.
So...
Is "i" a global variable which could/does conflict with other variables?
EDIT:
In a for loop, it is said that a this. variable would make it slower, and it is rather recommended to use "i" alone. But, it is also said that "i" conflicts with other variables. So, I think it would be best to find the true answer.