"Straw man argument. Nobody stated this." This is pretty much exactly his attitude, even if he did not explicitly add the other 3 words. "in wide use at a com

"Straw man argument. Nobody stated this." This is pretty much exactly his attitude, even if he did not explicitly add the other 3 words. "in wide use at a company and hence your previous efforts have in fact been productive and useful for them." Except that assumes it's literally true. It's not, as a downvoted person said :) It also assumes that him working on it would be useful or productive relative to doing something else. That is also probably a negative.