Even if we look at the presentation skills of Elon Musk… he is not the strongest speaker, but he is charming, he motivates, he is sympathetic and even though he tells you these futuristic ideas he creates a level of trust that makes me feel so fluffy, I would freely board the next falconeX to occupy mars.
The correct usage of structure and story arc (arc of tension) provides presentations with a more memorable aspect, no matter which form of presentation we are talking about and what the target audience.
Many people think that presentation designers are not considering the usage of the corporate design when in reality a corporate frame is a great guideline to work with. Pre-determined colors, fonts, style elements and measurements along the line actually support the work of a designer to create functional slides.
Due to our cultural background, our eyes scan slides from the top left to the bottom right. Any complicated concept chart or diagram is not fulfilling its function if you just leave people alone with it. Ones you create the slide according to the construction of your thought, it will be easier to comprehend and of practical USE.
I hope this helped to establish that design is the targeted purpose of communication where the form follows the intended function and has nothing to do with art.