The hive-minded We Are So Much Smarter than Our Ideological-Political-Socio-Economic Adversaries construct known as the (t)reason.com commentariat have again demonstrated their smug wrongness and intellectual deficiencies, in the lengthy comment thread found here.
For one simple example:
Yes, light waves and radio waves and sound waves and microwaves are all "the same thing" at some conceptual level, but I'll be damned if on its own a radio (AM or FM or CB or ham or walkie talkie) wave is giving off visible light in the process of carrying musical, verbal or other sonic signals.
So to an ignorant non-(pseudo)libertarian, it's not really wrong to say a radio wave and a light wave are different things. They are different in the qualities they manifest to the human who encounters them in nature or in a laboratory. That they both are a manner of energy transmission (waveform) doesn't make them the very same thing.
Try to heat your cold pizza by putting it next to your switched-on portable FM radio from the 1970s/80s. Put it right next to the speaker if you think it will help magnify the energy in those sound waves.
Try to light the room by pressing play on your .mp3 player. The little display screen doesn't count. The sound is what I'd like to see you use to light the room.
Yes, they're utterly distinguishable in the easiest manner from smug progressives.
You memorized the categories, thus demonstrating a rigidity of outlook premised on hierarchies-as-the-territory, rather than merely a map thereof.
You are so proud of your memorized categories that you think you know everything.
Maybe you are able to imagine the territory in perfect image when you read a map.
But you're still not walking the land when you read the map.