Math-heavy code tends to involve a lot of very similar algorithms, leading to a copy-paste-rename situation that isn't really helped by using a function. As su

Math-heavy code tends to involve a lot of very similar algorithms, leading to a copy-paste-rename situation that isn't really helped by using a function. As such it's incredibly common to end up with bugs from assigning to "x, y, y" and not "x, y, z" etc. Sometimes a clever compiler will warn you that you have done something odd, other times you'll be left to discover the runtime error.