 Is it a passive-aggressive thumbs up or a sincere thumbs up? Is it a sarcastic smiley face or a regular smiley face? Does the okay hand sign emoji mean that everything is okay? Or that the person using it is a white supremacist? There is no way to know. The emoji raises more questions than it answers, creates more problems than it solves. It's our way of avoiding the burden of writing incomplete sentences, but we pay a steep price for our laziness.