The invention of shoes doesn't really have anything to do with it, but vigesimal is a real thing, and does have the linguistic vestiges noted ("quatre vingts",

The invention of shoes doesn't really have anything to do with it, but vigesimal is a real thing, and does have the linguistic vestiges noted ("quatre vingts", "four score", et al.). Furthermore: A Troy ounce was 20 pennyweights. There are 20 Gebinde in a Strang. There were 20 maunds in a candy. 20 lyspond in a schippond. And so on. Enjoy https://archive.org/details/dictionnaireuni00dourgoog https://archive.org/details/dictionnaireuni00dourgoog .