How to avoid death By PowerPoint | David JP Phillips | TEDxStockholmSalon

You sat through that terrible PowerPoint last Tuesday. Forty minutes of your life... gone. Then you walked back to your desk and built the exact same monster for tomorrow's meeting. Don't feel bad. We all do it. But here's the thing... it's not about willpower. It's about your brain being set up to fail.

David JP Phillips has spent years combining two passions... the neuroscience of how our brains actually work and the craft of presenting ideas to other humans. What he found isn't just uncomfortable. It's a wake-up call for anyone who's ever opened PowerPoint and started typing.

Let's start with how bad our working memory really is.

Picture yourself at a train station. You pull out your ticket. Car 5, seat 42. Got it? No. You don't. On average, people check their seat number six times before they sit down. Six. And here's the gut punch... you don't have a separate working memory for train tickets and a separate one for presentations. Same tiny, fragile system running both.

So when you throw 16 objects, three paragraphs of text, and a page number that says "12 of 95" onto a single slide... you're not just being sloppy. You're committing what Phillips calls a neural execution.

One Message. That's It.

Phillips' first principle is painfully simple. One message per slide.

Think about the cocktail party effect. You're deep in conversation with someone when you hear your name across the room. Instantly your attention splits. You're nodding at your friend, but you're gone. That's what happens when a slide carries two messages. Your audience picks one... and it might not be yours.

One slide. One idea. Give humans a fighting chance.

Stop Reading to People Who Can Read

This one stings. John Sweller and Richard Mayer identified something called the redundancy effect. When you put full sentences on the screen AND speak those same ideas out loud... retention drops to near zero.

Not low. Not "could be better." Near zero.

Your brain can't process the same information through two channels simultaneously without short-circuiting. So what do you do? Pull your sentences down into the speaker notes where they belong. Up on the screen? Short text. An image. That's it. Use the tool for what it was built to do.

Make the Important Thing... Big

Every time you open your eyes, your brain prioritizes four things: moving objects, signaling colors like red and yellow, high contrast, and large objects. This isn't preference. It's biology. You can't override it any more than you can stop your pupils from dilating in the dark.

So why does every corporate template put the headline in the biggest font... when the headline is almost never the most important element on the slide? Phillips demonstrated this live. Shrink the title. Watch the audience's eyes fall naturally into the content. You can literally steer human attention by understanding what the eye was built to chase.

The most important part of your slide should be the biggest thing on your slide. Nothing else earns that real estate.

Contrast Is Your Steering Wheel

Phillips showed a list of items on screen. Eyes everywhere. No focus. Then he applied contrast... highlighting one item bright while dimming the rest. Suddenly every pair of eyes in the room locked onto the same spot.

He described the audience like kittens chasing a laser pointer. And honestly? That's exactly what it looks like. Our brains follow the brightest point of visual contrast without conscious effort.

But here's the deeper insight. Most companies default to white PowerPoint backgrounds. That means the screen is the brightest, highest-contrast, largest object in the room. The speaker becomes a footnote in their own presentation. Flip the background to dark and suddenly YOU become the highest-contrast object. You become the presentation again. Because you always were supposed to be.

Light doesn't fight darkness... it just shows up. Same principle. Let the screen support you, not compete with you.

Six Objects. Not Seven. Six.

Phillips ran a beautiful experiment. He flashed groups of dots on screen. Three dots? The audience counted them in two-tenths of a second. They didn't count... they saw. Five dots? About 1.2 seconds. Seven dots? Brains stalled. People had to actively count, and that cognitive load difference is roughly 500%.

The threshold is six. Up to six objects and the brain perceives them instantly. Seven or more and you've forced your audience into an energy-expensive counting process. And brains are energy-saving machines by design. They won't invest 500% more effort to decode your cluttered slide. They'll just... leave. Mentally check out. Death by PowerPoint, delivered.

The Real War Happening in Your Conference Room

This isn't about pretty slides. This is about respect. John Medina, one of the world's leading developmental molecular biologists, put it bluntly: "If companies had as little respect for business as they have for presentations, the majority would go bankrupt."

Every time someone sits through a bad presentation, that's time stolen. Focus wasted. Three minutes without hope in a meeting room might not kill a body... but it murders engagement, creativity, and trust.

The five principles are simple enough to fit on one hand:

1. One message per slide 2. No sentences when you're speaking... move text to notes 3. Size matters... biggest element = most important element 4. Contrast steers focus... and dark backgrounds put YOU back in command 5. Six objects max... or your audience pays 500% more cognitive tax

Simple doesn't mean easy. But simple is where clarity lives.

You've been in the bad meeting. You've built the bad deck. No shame in that... we all inherited the same broken template. But now you know the biology behind why it fails. Five principles. One decision: will you keep committing neural executions in your conference rooms... or will you build something that actually respects the beautiful, limited, easily overwhelmed brains sitting in front of you? 💙 The slide is the visual aid. You are the presentation. Always have been.

--- Source: https://www.youtube.com/watch?v=Iwpi1Lm6dFo