And like our existing senses, they wouldn’t be limited to only certain people. Psychic abilities would be as widespread as eyes and ears. In fact, the idea that only certain people have psychic abilities, and well-defined ones at that, is ridiculous.
Psychic abilities also wouldn’t be limited just to humans. They would be widespread throughout the animal kingdom, just as eyes and ears are. Some animals would evolve the ability to be undetectable by psychic abilities, like camouflage hides an animal from sight (see ysalamiri). Others would evolve the ability to create psychic decoys, or imitate the psychic signatures of other animals.
In short, it would be pretty obvious that psychic abilities existed, if they did exist.
Naturally, this line of logic has its flaws. I certainly don’t intend to disprove the existence of psychic abilities with this article, but I think that I’ve demonstrated how unlikely psychic abilities are, at least on Earth. Maybe they’ve evolved on another planet, with an entirely different ecosystem. But they haven’t evolved here.
It’s also worth pointing out that I’m not ruling out artificial psychic abilities, which are probably no more than 100 years away. We have the precursors to such technology in widespread use today, in the form of computers and data networks. We can have one device transmit information wirelessly to another device. It’s not that much of a stretch to think that one day, we’ll be able to implant computers into the human brain, which will translate our emotions or thoughts into data, which will be broadcast to receivers implanted in the brains of other people.