Sometimes we get a “wild hair” and go to our barber or hairdresser with a radical new idea for a haircut. After copious research, you present the haircut you have in mind to the hair cutter, who then needs to translate a grainy two-dimensional image on your phone into a masterpiece that still looks good in three dimensions. It's no surprise that sometimes this goes terribly awry. Hey, we've all had terrible haircuts, but at least it (usually) grows back. As my dad always used to say… The only d…