“To experts in explosives, it seemed to be the work of someone who really didn’t know what they were doing.
Chris Falkenberg, president of Insite Security, which works with Fortune 500 companies, said the device, as described by authorities, “doesn’t differ much at all from ‘The Anarchist Cookbook’” — the underground 1971 manual for homemade explosives.”
http://news.yahoo.com/s/ap/20100503/ap_on_re_us/us_times_square_car_bomb