Sometimes a phrase like "to be fair" is too unwieldy and disrupts the flow of the message you're typing, so you shorten it to "tbf". Other times the cadence of the full phrase is an integral part of the prosodic balance, so you spell it out in full. In the future we'll have so many options that it will finally be feasible to write the pure melody of your thoughts beforehand, and then attach whatever semantic content you like to it.













