Seems like this David Mark is mad at the world: http://sixrevisions.com/javascript/promising_javascript_fram... http://sixrevisions.com/javascript/promising_javascript_fram... http://stackoverflow.com/users/88658/david-mark http://help.wugnet.com/bravenet/webmaster/Great-Examples-cod...
Thanks for digging these up. His tone and his arguments are two different things; I find his tone hard to take, but can any JS coders weigh in on his arguments?
Not really most libraries use feature testing, especially jQuery and John advocates feature testing in quite a few of his writings.