I remember there being a rather exuberant discussion a couple years ago about the advantages/disadvantages and goodness/badness of putting a single space after a sentence versus putting two spaces. The debate rages on, but this one study suggests that putting two spaces makes sentences easier to read.
https://www.washingtonpost.com/news/speaking-of-science/wp/2018/05/04/one-space-between-each-sentence-they-said-science-just-proved-them-wrong-2/?noredirect=on&utm_term=.b61d35728d29 -- bp <part15sbs{at}gmail{dot}com>
