I think it's a balancing act between labeling and mislabeling. Some things are so hard to name that naming them actually hurts. Also sometimes you don't want to

I think it's a balancing act between labeling and mislabeling. Some things are so hard to name that naming them actually hurts. Also sometimes you don't want to pin down what it actually is; naming restricts the concept. Wrt maths, you did maths without greek letters and with plain english, you'd have pretty ugly formulas. Greek letters, while obtrusive to newcomers, can be a lifesaver for conciseness in expression.