"La mejor prueba de la inteligencia extraterrestre es que no nos han contactado."

Simplified Meaning:

Imagine you see a busy street full of cars crashing into each other because no one follows the traffic rules. Now, think about a group of very smart people watching this mess from a safe distance. Instead of jumping into the chaos, they decide to stay away because they know interacting might only lead to trouble. This idea is like saying that if there are super intelligent aliens out there, they're smart enough to avoid contacting us. They probably see that humans often fight, struggle with understanding each other, and sometimes make harmful choices. Instead of getting involved and risking problems for themselves, they choose to stay hidden. This thought can be a lesson for us too. Sometimes, it’s wise to observe a situation carefully before acting. If a situation looks too chaotic or risky, stepping back might be the best choice. This way, we can avoid unnecessary conflicts or complications.