Tip of the iceberg. With the proliferation of flight simulator computer programmes and easy access to a lot of aviation softwares and websites, a slick con artist can easily make it through the hoops. I know of a few blokes who made it onto the 744 using on line manuals and videos which their relatives passed on to them. Many years go you can buy 744 and 737 as well a A320 sim preparation videos from advertisers on the ALPA magazine.