A pet peeve of mine is theory-oriented texts that present code in a specific programming language...replacing the actual syntax with mathematical symbols. This

A pet peeve of mine is theory-oriented texts that present code in a specific programming language...replacing the actual syntax with mathematical symbols. This is unhelpful for practitioners. Another peeve is when authors present algorithm pseudo-code in terms of mathematical symbols, where it isn't at all obvious how to compute the value of the symbols in practice. You've shown that there is an algorithm, but not in a useful way. I mean, I see the value of mathematical notation; I have a math degree. But still....