Your Brain Is Not a Hard Drive (So Stop Treating It Like One)

Think back to the last time you sat through a speech. Not the one where the speaker bribed the audience with donuts—an actual, honest-to-goodness presentation. Now ask yourself: How much do you remember? A few key points? A vague theme? The speaker’s tie? The fact that the room was too cold?

If you’re like most humans—and not one of those rare unicorns with a photographic memory—you probably walked away with only a sliver of what was said. And that’s perfectly normal. Your brain is not a 2‑terabyte SSD. It’s more like a junk drawer: useful, but only if you don’t overstuff it.

So if you’re a speaker, here’s the good news: people forgetting most of what you say is not a personal failure. It’s biology. It’s psychology. It’s the fact that someone in the third row is definitely playing Wordle.

In fact, research shows that audiences remember about a third or less of what they hear during a presentation. Yes, that’s a bit depressing. But it’s also a clear sign pointing to a simple truth: keep your message simple.

Nick Morgan, a Forbes contributor and author of Trust Me: Four Steps to Authenticity and Charisma, puts it bluntly: speeches are an inefficient way to transmit information. According to Morgan, “People don’t remember much of what they hear, so focus and keep it simple.”

Translation: your audience is not a sponge. They’re more like a colander.

And let’s be honest—modern audiences face an uphill battle. Even the most captivating speaker is competing with buzzing phones, incoming texts, baseball scores, Candy Crush invites, and the urge to post “I’m at a boring speech send help” on Instagram. By the time the speaker gets to their second point, the audience has already seen six notifications and mentally planned dinner.

But here’s the twist: the real issue isn’t that listeners are lazy or easily distracted. It’s that many speakers make their message harder to absorb than it needs to be. As Patterson, Grenny, McMillan, and Switzler explain in Crucial Conversations, complex language and jargon create barriers. When speakers use plain language, active voice, and real-world examples, audiences actually understand—and remember—what’s being said.

Even the greats—Steve Jobs, Barack Obama, pick your favorite communicator—lost a listener or two to runaway thoughts. No one is immune. But simple messages stick. Simple messages spread. Simple messages win.

So how do you keep your presentation simple without dumbing it down? Here’s your cheat sheet:

Tips for Keeping It Simple (and Keeping Your Audience Awake)

• Be prepared. Winging it is for birds, not speakers.

• Relax. Nervous energy leads to rambling, and rambling leads to confusion.

• Use direct language. Say what you mean. Then stop talking.

• Speak clearly. Enunciate like your high school drama teacher is watching.

• Avoid $5 words when 5‑cent words work just fine. No one is impressed by “utilize.”

• Skip acronyms and jargon. Unless your audience is made up of robots.

• Stick to 3–5 main points. More than that and you’re basically reading them a novel.

• Tell a story. Humans are wired for narratives, not bullet‑point marathons.

• Stay on topic. Tangents are fun at brunch, not in presentations.

• Respect the clock. If you’re given ten minutes, finish in nine. Your audience will love you forever.

Every one of these tips is a stepping stone toward clarity. And clarity is the secret sauce of memorable communication.

Now, if your topic is complex—like, tax-efficient investment strategies—you’ll need to make it even simpler. Just because you understand the details of capital gains doesn’t mean your audience does. Some people hear the word “finance” and immediately feel overwhelmed. If you don’t break things down, you’ll lose them faster than you can say “deductible.”

The good news? Simplifying isn’t hard. It just requires empathy. Put yourself in your audience’s shoes. Imagine what they know, what they don’t, and what will make their eyes glaze over. Then adjust accordingly.

Because here’s the truth: your audience wants to understand you. They want to stay engaged. They want to walk away feeling smarter, not overwhelmed. And when you keep things simple, you give them that gift.

So, the next time you prepare a speech, remember: your goal isn’t to show off how much you know. It’s to ensure your audience remembers anything at all.

Break things down. Trim the fat. Focus on what matters.

Your listeners—and their overworked mental hard drives—will thank you.

(Tim Herrera is the author of “Public Speaking: Simple Steps to Improve Your Skills” and “Mastering Media: Strategies for Effective Communication in the Digital Age.”  You’ll find both Amazon.)