Resolved:

[zwol]

that without it we still have plenty of symbols, all of which are easier to write, and therefore the use of ξ in mathematics should be abolished.

Comments

[mrissa.livejournal.com]

I once annoyed my advisor by using a smiley face in its stead, with the substitution noted at the beginning, so that I could simply sub in that particular symbol once at the end and be done. My point was that you can call variables whatever you like, and the math will come out the same. His point was that he was not at all used to looking for "the smiley-face squared term" etc.

[zwol.livejournal.com]

Now I'm imagining the world where the mathematicicans have taken smiley face and its relatives for yet another set of symbols with conventional meaning.

[mrissa.livejournal.com]

I believe their Sparkly Unicorn Technology is far ahead of ours.