I recently spent time at a theme park, and honestly, I had a great time. The rides were fun, and my youngest son was braver than he’d ever been on some pretty tall rides. The landscape was beautiful, with flowers blooming in festive shapes. The overpriced snacks tasted better than they should.

But there was one thing that kept frustrating me all day.

The drink cups.

If you’ve been to a major theme park lately, you’ve probably seen them. You purchase a paper cup, but instead of going straight to the tap, it has a barcode. The barcode allows you to fill it only for a certain amount of time. If you try to refill it, you may have only a certain amount of time to do so. At the park I was in, there was no refill.

I know.

This is a petty thing to be irritated about. Yet, I couldn’t stop thinking about it.

Not because I needed another soda, but because that little barcode represents something much bigger than soft drinks.

It represents what happens when we stop trusting one another.

The Cost of Assuming the Worst

The parks aren’t really trying to stop someone from getting one extra refill. They’re trying to prevent the tiny percentage of people who might abuse the system. They might fill up a water bottle brought from home, or keep the same cup all day (which would seriously be a feat).

From a business perspective, I understand the logic, but there’s a cost involved that doesn’t show up on a balance sheet. The barcode communicates, “We assume you’ll cheat if given the chance.”

Most people won’t.

Most people buy the cup, enjoy a drink, maybe grab another before leaving, and move on with their day. Most people aren’t filling desert hiking backpacks with lemonade or running a black-market cup trade at the carousel exit.

Most people are simply trying to enjoy the experience they already paid for, and the system is built around the exception instead of the rule.

We See This Everywhere

You see these types of measures in many places, all stalling you just before you accomplish your goal:

Shopping carts chained together.

Products locked behind plastic cases.

Receipts checked on the way out.

Each policy eats into the individual’s time and makes things a little less friendly.

Together, they communicate something heavy: society expects us to disappoint one another.

The Psychology of the Social Contract

As a therapist, I’m honored to witness the invisible agreements that hold relationships and communities together. These social contracts mean that most of us don’t litter or steal. We stop at red lights, wait in queues, and return our shopping carts to the corrals.

Having trust that these things happen makes our day smoother. We make gains together because the majority of people cooperate. When that trust disappears, our interactions become defensive instead of collaborative. Energy is spent protecting ourselves rather than connecting with others.

Your Energy Is a Limited Resource

One question I come back to often, professionally and personally, is, “Is the juice worth the squeeze?”

Every decision is an investment in our future. It costs us time, money, and mental energy. Time spent putting protective measures in place, assessing others’ motives, or strategizing is time that could be spent doing one of hundreds of other things.

Such time investment is worth consideration, even if you decide after reflection that the defensive stance makes sense for you.

The more energy we spend anticipating dishonesty and navigating systems designed around distrust, the less energy we have left for creativity, generativity, and relationships.

The unrefillable cup is just a symptom, one of thousands of moments that say, “We don’t really trust you.”

Choose Where to Invest

I can’t change a theme park’s refill policy or eliminate every frustrating system built around preventing bad behavior. But I can choose where I invest my own energy.

I can reject cynicism as my default setting.

I can assume good intentions until proven otherwise.

I can be the person who returns the shopping cart.

Because social contracts are strongest when we recognize them as something we contribute to and benefit from.

The World Happiness Report consistently finds when people trust one another, and their institutions, they report higher levels of happiness and well-being. Trust reduces stress and strengthens communities, allowing people to breathe instead of constantly defending themselves.

Maybe that’s something to put inside that unrefillable cup: that some people will take advantage of generosity, but most won’t.

If we build every system around the few who abuse it, we risk losing something more valuable than a few ounces of soda.

We risk losing trust in each other.

That may be the most expensive thing a society can give up.