I was re-reading my copy of Volume 1 of OD&D the other day and I looked again at this famous chart:
In itself, it's no big deal, except that the chart also lists goblins, kobolds, hobgoblins, and gnolls as irredeemably Chaotic with no exceptions. I can't help but wonder if there were a reason behind this or if it was simply done without any real thought, especially when you look at this later chart, which accompanied a Gary Gygax article from a 1976 issue of The Strategic Review.
As I said, this more than likely means nothing in any absolute sense. So much as D&D wasn't designed so much as happened. Even so, I find it worthwhile and often inspirational to take note of how various aspects of the game were presented at different stages of its existence. Being a Holmes baby, I have a certain fondness for the fivefold alignment scheme, even if it's not quite what I use in my home campaign. Likewise, the threefold system of OD&D is a little too simple for me, but that doesn't mean I can't find it a good source of ideas at times.