I mean, it sort of deserves being made fun of. 18 years ago Google existed, surely you'd search for "area under a curve" before going through all the effort of writing a paper reinventing integrals?
Edit: actually the paper was written in 1994, not sure what the "18 years" was referring to. But still, peer review existed and so did maths books... Even if the author can be excused somewhat (and that's already a stretch), peer reviewers should definitely not let this fly.
Edit: actually the paper was written in 1994, not sure what the "18 years" was referring to. But still, peer review existed and so did maths books... Even if the author can be excused somewhat (and that's already a stretch), peer reviewers should definitely not let this fly.