If you haven’t spotted it yet, look toward the right side of the diner counter.
Sitting beside the ketchup and mustard bottles is a modern plastic bottled water.
That’s the hidden mistake.
Everything else reflects a classic 1960s diner.
The plastic disposable water bottle, however, belongs to a much later era.
Why It’s Incorrect
Today, bottled water is everywhere.
People carry reusable bottles, disposable bottles, insulated tumblers, and sports containers almost everywhere they go.
Because they’re so common, our brains barely notice them anymore.
But during the early 1960s, the situation was very different.
Most diners simply served tap water.
