The of and to a “in” is that it, for you, was with “on”. Profound? No. These are the top 14 most commonly used words according to this Vsauce video by Michael Stevens. He goes on to reveal a “bizarre” pattern where the second word (“of”) appears one-half as often, the third (“and”) one-third as frequently, and so on, that is, proportionally to one over its rank. This phenomenon is known as Zipf’s law after the author of Human Behaviour and the Principle of Least Effort published in 1949.
“The” leads the list at 6% for being most used by the reckoning of Stevens. Another study of 743 billion words found on Google books by their director of research came up with “the” occurring 7.14 percent of the time. See this Abacaba video for entertaining and informative bubble charts on word frequencies by use, length and gender.
By the way, I learned a new term from Stevens: “hapax legomenon”—a word that only appears once in a book, that is, at the extreme end of the frequency chart ruled by Zipf’s law. I am now on the lookout for these rarities so I can stop a casual conversation in its tracks by announcing my discovery of a hapax legomenon. ; )
Zipf’s law does not just apply to words, for example, this mysterious rule governs the size of cities as explained by this post on Gixmodo .
The driving force for this regularity in frequency distributions is the tendency for people to put in as little effort as they can, that is, slacking off for the most part.
That is it.
*For bringing this to my attention, I credit Nathaniel Chapman, an undergraduate researcher going for a Master’s degree in chemical engineering at the South Dakota School of Mines and Technology.