Dear 100 Hour Board,
With regards to Board Question #22939, I'd like to add that much can be learned about graduation clothing by looking at the symbolism of temple clothing. In fact, in a famous opening prayer at a BYU commencement, Hugh Nibley said, "We have met here today clothed in the black robes of a false priesthood." While Brother Nibley was not a General Authority, this is still amusing and relatively convincing.
If you'd like to read a little more about it, here's his speech on the BYU speeches website: http://speeches.byu.edu/reader/reader.php?id=2553.
If you still don't think the connection between graduation clothing and temple clothing is uncanny, I suppose it can mean whatever you want!
- nobody special