While driving around looking for an address the other day, my husband made an observation.
He pointed out that when someone gives directions to a visitor to an unfamiliar city, east and west are meaningless unless you know the area.
For example, Santa Barbara has south-facing beaches and our mountains are to the north. It helps to know this if someone tells you to go east or west. We also have a designated "east side" and "west side," but unless you live here, you don't know where those parts of town actually are until someone tells you.
However, everyone understands left and right.
When you're giving a presentation, are you giving "east and west" directions or "left and right" directions? That is, are you using universal language that anyone can understand or are you clouding your message with insider lingo and jargon that only a few can comprehend?
Always make sure you're using the most common and universal terms that most people understand - make sure you're speaking the audience's language.