At first glance, this challenge seems childish. Seven glasses, a few pipes, water to flow... and a simple question: which glass should be filled first? But as often happens with visual puzzles, the answer isn't what you expect. And if you answered too quickly, there's a good chance you've fallen into the trap.
The challenge that plays on our impatience
This type of puzzle is based on a remarkable principle: our brains want to move quickly. As soon as we see a network of interconnected glasses, we instinctively search for the "logical" path of the water. We follow the pipes with our eyes, anticipate, compare... and forget a crucial detail.
