Technical Terms Triangle Counting: The process of identifying and enumerating all sets of three interconnected vertices in a graph, serving as a pivotal metric in network analysis.

But don't let its simplicity deceive you – this visual illusion is more challenging than it appears. In fact, only one out of five individuals can accurately count all the hidden triangles.

In fact, only one out of five individuals can accurately count all of the hidden triangles. So if you believe you're among the top 20 per cent most observant folks, you'll need to demonstrate it.