I just daydreamed up a great analogy for Afrezza vs injected bolus.
Injected bolus and carb counting is like measuring a person as thoroughly as possible and trying to open the door to exactly the right opening for their size with little regard for the time when they're walking through it
Afrezza is like opening the door all the way at the exact moment any person needs to walk through it and closing it behind them.
Hope that helps. I think in bizarre ways.