You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
Eilmer of Malmesbury tried to fly by jumping off the top of the Abbey and later remarked that he forgot to add a tail after he broke both his legs during his test and the Bishop told him no more testing.
So what if he did remember to have a tail during his first 'flight' think he would have still crashed and broken both his legs?