I have seen the Windows source code. This absolutely cannot be done. The output of the first pass will be howling gibberish. They are talking about a million lines per man-month, which assumes that only about 1% of the code will require thoughtful post-editing. Screaming nonsense.
Article is out of date (including it being day old news already) but the guy updated his LinkedIn post walking back some of the statements. Update in the original HN thread.
