I did an ionic “detox” foot bath this week. Before you start picturing me deep in a woo-woo wellness spiral – relax. I won it at a fundraising gala and thought, why not? At worst, I’d get a good story out of it. Spoiler alert: I did.
I sat there with my feet in a basin of perfectly clear water. Then they flipped the switch. Within minutes, the water started to change. A little murky. Then darker. By the end? A swampy, brownish brew with greenish bubbles that looked… suspiciously like something had been pulled out of me.
And here’s the uncomfortable truth: For a moment – just a moment – I felt it. That flicker of doubt. That quiet whisper: What if this actually is working?
Now, intellectually, I knew better. The science doesn’t support it. The discoloration comes from the machine, not my liver staging a dramatic detox through my feet.
But that moment? That’s where the lesson lives.
The Power of What We Can See
We like to think we’re rational decision-makers. Especially those of us who pride ourselves on being savvy negotiators, critical thinkers, and generally not-easy-to-sway humans.
But here’s the reality: We are wired to believe what we can see.
Put something in front of us that looks like evidence – especially something visual, immediate, and a little dramatic – and our brains start connecting dots… even when the dots don’t belong together.
Dirty water = toxins removed.
It feels obvious.
It feels real.
It’s not. And yet, the experience is persuasive.
The Illusion of Evidence (and Why It Works So Well)
This is what I call the illusion of evidence.
It shows up everywhere – not just in wellness trends:
- A confident speaker with a slick slide deck (must be credible)
- A flurry of data points with no context (must be accurate)
- A strong emotional reaction (must be true)
In negotiation, this becomes dangerous when we start accepting:
- assumptions as facts
- presentation as proof
- confidence as credibility
Because once something feels true, we stop questioning it.
Confirmation Bias: The Quiet Co-Conspirator
Now layer in confirmation bias. If you already want something to be true, if you’re hoping for a shortcut, a fix, a breakthrough – you’re even more likely to buy in.
That’s why these experiences are so powerful. They don’t just show you something. They show you something you want to believe. And your brain happily fills in the gaps.
A Better Way to Show Up in Negotiation (and Life)
This isn’t about calling out foot baths. It’s about calling ourselves forward. Because the same mental shortcuts that make that murky water feel convincing can:
- lead us to accept weak arguments
- cause us to undervalue ourselves
- push us into decisions that don’t serve us
So, what do we do instead?
- Get curious before you get convinced.
Pause and ask: What else could explain what I’m seeing?
- Separate experience from evidence.
Just because something feels powerful doesn’t mean it’s valid.
- Challenge the narrative.
Who benefits if I believe this? What’s not being said?
- Give yourself space to think.
The faster something pushes you to believe, the more it deserves a second look.
The Real Takeaway
That foot bath didn’t detox my body. But it did offer something far more valuable: A live demonstration of how easily perception can masquerade as truth.
And if we’re serious about negotiating our best lives – in business, in relationships, in the choices we make – we need to get comfortable questioning even the things that look undeniable.
Because sometimes … dirty water is just dirty water.
Let’s Keep the Conversation Going
Where have you seen the illusion of evidence show up in your life or work?
Drop a comment – I’d love to hear your take.
And if you’re ready to sharpen your negotiation skills (and your ability to spot what’s really going on beneath the surface), check out the Art of Feminine Negotiation podcast or join our Women On Purpose community.