Simple machines make work easier for us by allowing us to push or pull over increased distances.
It was perfectly normal to have no middle name. um... well.... Sir Isaac Newton didn't have a middle name. im serious. belive me. i knew that for 3 years already becasue we learned about him 3 years ago. i studied alot about him. <br /><br />[edit to improve]: During his time period, many people didn't have middle names, and some only had initials, such as Harry S. Truman.
The custom is that a man who has been made a knight by the British (before that, the English) monarch is addressed by his first name, preceded by Sir. Thus, if you had been personally introduced to Newton after he was knighted in 1705, you should have called him Sir Isaac. If you had written him a letter, you would have posted it to Sir Isaac Newton. Personally, I think that referring to him now as Sir is silly.