Perhaps you are a scientist, a financial analysist, an engineer; so it’s possible that you get paid to make rational decisions. Decisions that lead to the outcomes and objectives you desire.
The paradox is this: you might believe that you do this all the time, that you are always rational, and most of all, that others are too. So that is how you build your presentations, based on the facts.
But studies show that this is far from true. Almost every choice we make is subconscious and irrational. We are superstitious creatures of habit, full of beliefs and hunches.
So in every presentation where you assume that people will be persuaded by your logical argument, you’ve probably made a significant, irrational mistake.
Use symbols and use connection to make your argument understood.