I know this is a huge derail, but since the topic is at hand, I didn't feel it was worth making another thread.
A lot of people have been bringing up 1 skill = .9 acc, and relating it to melee attacks. The tests in the blog that Kaeko linked showed very convincing evidence that this isn't the case. I'd like to provide additional reasoning why this would be a poor assumption to make, since it hasn't been brought up.
In the Dec, 2003 Patch:
Dec. 16, 2003 Update Details
-The level cap has been raised to 75.
[Battle Updates]
-With the raising of the level cap, the skill cap for each combat skill has been increased.
-The accuracy of physical attacks for high-level characters has been increased.
While it's up to some interpretation, I feel like it's good reasoning to assume that for melee accuracy, 1skill=.9acc wasn't always the formula and was increased.