Lame, didn't even cover the clusterf*k that is the apostrophe and year ranges. 1990s vs. 1990's vs 90s vs 90's vs '90s vs '90's or the could've, could have, c

Lame, didn't even cover the clusterf*k that is the apostrophe and year ranges. 1990s vs. 1990's vs 90s vs 90's vs '90s vs '90's or the could've, could have, could of corrupted homophone disaster. Like most things in English, apostrophes kind of have a standard, basic, rule concept (used before an s when making a possessive), then the rest is common exceptions (contractions, plural form possessives) and options (decade ranges) which are only options to certain people and necessary to others, except for the very specific exceptions (plural single letters, quoted plurals, quoted possessives, possessive and plural, words naturally ending in s, glottal stops, un-lettered syllable accents, clicks, silent but looks cool), which nobody remembers correctly except those being pedantic and never seem to really muss up anybody's understanding of the meaning. Anybody who thinks they know all the apostrophe rules most likely doesn't. Even http://theoatmeal.com/comics/apostrophe http://theoatmeal.com/comics/apostrophe which captures some of the complexity mises a bunch of these cases and inserts one I've never seen -- the quoted single letter plural. The only rule you have to remember is this, "what are the grammar rules that your readers will be assuming are the rules, follow those for comprehension."