Why experts find it hard to explain what they know

One of the unexpected challenges of becoming an expert is that you gradually forget what it feels like not to know. 

It sounds strange, but over the years I've found that the people who understand a subject best are often the people who find it hardest to explain clearly. Not because they're not good communicators. Quite the opposite. They've simply spent so long immersed in their subject that they no longer see it through a beginner's eyes.

I've worked with so many people who know their subject inside out. They often arrive at a workshop assuming they need to become more confident communicators. Yet one of the biggest breakthroughs usually happens long before we talk about confidence or delivery.

It happens when they realise their audience isn't starting from the same place they are.

Expertise changes the way you think

The more time you spend working in a subject, the more connections your brain naturally makes.

Ideas that once felt complicated become obvious. Acronyms become everyday language. Processes that once required conscious thought happen almost automatically.

This is one of the greatest benefits of experience, but it also creates an unexpected communication challenge. But you have to remember, your audience hasn't travelled the same journey.

They're hearing your explanation without the years of background knowledge that helped you arrive there. What feels logical to you can feel overwhelming to someone encountering the topic for the first time.

The challenge isn't explaining more. It's deciding where to begin.

Your audience doesn't need everything you know

Many professionals worry that simplifying their message means oversimplifying it, but in reality, they're very different things. 

Oversimplifying risks losing important meaning. Simplifying means selecting the information that matters most for the audience in front of you.

When we know a subject well, it's tempting to include the history, the context, the caveats and every interesting detail that helped shape our own understanding. We want to be accurate, balanced and complete.

The difficulty is that audiences rarely need completeness, they need clarity.

Helping people understand something isn't about demonstrating everything you know. It's about helping them understand what matters most.

Clarity is a sign of expertise, not a lack of it

One of the biggest misconceptions I encounter is that sounding knowledgeable means sounding complicated, but I've never found that to be true.

Some of the most impressive communicators I've worked with are also the clearest. They have the confidence to leave things out because they know exactly what matters and what doesn't.

Rather than trying to impress people with the depth of their knowledge, they focus on making their expertise accessible. Ironically, this often makes them appear even more credible because audiences rarely judge us by how much information we share. They judge us by how well we help them understand it.

One of the biggest communication mistakes isn't information overload. It's expert overload: trying to transfer years of knowledge into a single conversation instead of selecting the information that will be most valuable to the audience in front of us.

After all, anyone can make something sound complicated. Making something complicated feel simple is much harder.

Start with what your audience needs

One of the questions I often ask participants during a workshop is surprisingly simple: 'If your audience could only remember one thing tomorrow morning, what would you want it to be?'

It's amazing how often that question changes the way people prepare.

Instead of trying to communicate everything they know, they begin organising their thinking around a single idea. Supporting information becomes easier to prioritise, examples become more relevant and unnecessary detail naturally starts to disappear.

The goal isn't to say less for the sake of it, it's to help your audience remember more.

Why this often leads to over-explaining

When we haven't decided what matters most before we begin speaking, it's very easy to fall back on everything we know.

We add another example. We introduce another caveat. We explain the same idea from a different angle, hoping that somewhere along the way our audience will find the clarity we're trying to create.

Ironically, this often has the opposite effect.

If you've ever recognised yourself doing this, you may also enjoy reading 'Why We Ramble When Presenting, Even When We Know Our Subject', where I explore why knowledgeable professionals often over-explain when the pressure is on and how a little structure before you begin speaking can make a remarkable difference.

The real goal isn't to explain more: It's to explain better.

Whether you're presenting to colleagues, speaking with customers, recording a podcast or representing your organisation in a media interview, your audience isn't measuring how much you know.

They're deciding how well they understand it.

The professionals who communicate most effectively aren't always the ones with the greatest expertise. They're the ones who understand how to bridge the gap between what they know and what their audience needs.

This is exactly why learning to organise your thinking before you start speaking is such a valuable professional skill.

If you'd like to explore this further, you may also enjoy reading 'How to Create a Message People Actually Remember', where I look at practical ways to identify your core message, communicate it with clarity and make it memorable long after the conversation has finished.

If this article has prompted you to think differently about how you prepare for presentations, interviews and other important communication opportunities, I'd love you to join me at my next free 'Create Your Magnetic Message' Masterclass.

Together, we'll explore practical frameworks that help you communicate with greater clarity, confidence and impact, whatever the occasion.