Types are just the mechanism. The real problem is the one fph pointed out: LaTeX reports errors in its own terms instead of the author’s, and review comments li

Types are just the mechanism. The real problem is the one fph pointed out: LaTeX reports errors in its own terms instead of the author’s, and review comments live somewhere else. Gradual typing is simply how the compiler can understand the names you introduce without pretending that all of LaTeX can be typed, because it can't.