From the article and poking around the site it appears that the author has basically rediscovered the empirical CDF. (Also its not at all clear what the author

From the article and poking around the site it appears that the author has basically rediscovered the empirical CDF. (Also its not at all clear what the author's "jackknife" is, but the real one dates to the 1950s https://en.m.wikipedia.org/wiki/Jackknife_resampling https://en.m.wikipedia.org/wiki/Jackknife_resampling )