Hilariously, light is an electromagnetic wave.
So, yes, we can see electromagnetic waves.... Just, only a very small segment of them.
How wrong he was. Now we use EM daily for everything.... Communicating via Wi-Fi, listening to music in the car (FM broadcast), or via Bluetooth and using LTE... Even heating our food. Not to mention medical applications like X-rays...
There's a shitload of stuff we use EM for without even thinking. It's all around us, all the time, like the matrix. I love EM science.
This goes to show you that, just because someone discovered a thing, doesn't mean that they have any idea what to do with that discovery, or that the discoveries end there....
Before, reality was just what humans could touch, smell, see, and hear, but after the publication of the charged electromagnetic spectrum, we now know that what we can touch, smell, see, and hear, is less than one-millionth.