Specialized microchips that manage signals at the cutting edge of wireless technology are astounding works of miniaturization and engineering. They're also difficult and expensive to design.
It's a probability thing, and it's actually true, due to pure chance. Same reason it's nigh impossible for our planet to be the only one in the cosmos with intelligent life. It's also the reason that any finite number pattern can be eventually found as a series of digits in pi.
It very much is a probability thing... A pool of monkeys, smashing on a keyboard for an infinite amount of time will eventually generate all combinations of text possible. The longer the process goes on, the closer the probability approaches 1.
You need to learn to stop letting others do your thinking for you. Open your eyes.