Now that you’re majoring in one of the technical disciplines (engineering, science, or math), you’re going to be spending a significant amount of time communicating in writing with others. You may find that previously unimportant details, such as crossing your z’s, now become essential — not only so that others can understand you, but also so that you can avoid mistaking your own 2z for z2 and so on. This is especially important if your handwriting (like mine!) is less than perfect.
Before I continue, take a fresh look at our Roman alphabet, the digits, and the Greek alphabet: