Peering through his newly-improved 20-power homemade telescope at the planet Jupiter on Jan. 7, 1610, Italian astronomer Galileo Galilei noticed three other points of light near the planet, at first believing them to be distant stars. Observing them over several nights, he noted that they appeared to move in the wrong direction with regard to the background stars and they remained in Jupiter’s proximity but changed their positions relative to one another. He later observed a fourth star near the planet with the same unusual behavior. By Jan. 15, Galileo correctly concluded that they were not stars at all but moons orbiting around Jupiter, providing strong evidence for the Copernican theory that most celestial objects did not revolve around the Earth.
Did Galileo see the moons of Jupiter ?
Joe says “Of course not. He only saw his own telescope.”
I say that it’s a more efficient and honest to acknowledge that Galileo saw the moons. In other words, I vote for using this kind of language in this kind of situation.
When I am driving on the interstate highway at 70 mph and using my review, do I see the cars behind me ?
Joe says: “Of course not. You are only seeing your mirror.”
But isn’t the rearview mirror installed in the first place to help me make life-and-death decisions ? Isn’t the mirror used to keep me informed about the cars behind me ?
Joe is very “literal.” I decide to try and show Joe where his “literal” leads.
“Joe, I also wear glasses when I drive. So I was looking at the rearview mirror ( as you would say ) through my glasses. So was I not looking at the mirror after all but rather at the inside of my glasses ?”
“Well now that I know the whole story, of course you were just looking at the inside of your glasses.”
“Wait a minute, Joe. Is it not more…literal…to say that I was looking at photons emitted by my glasses ?”
Does this continue until a the visual part of the brain is looking at nerve signals ? Is the “I” that “sees” a located piece of meat ?
For me this is not about “true” or “false.” I’m primarily interested in “life” of signs.
In “Cry Me An Eagle,” I discussed the eagle warning cry that these monkeys employ. I suggested that the cry “is” the eagle. Some seemed to see what I was pointing at. Others were “literal.” I of course “get” the literal approach. We can and do thematize telescopes, rearview mirrors, and speech noises. But this is the exception. This is temporary “shifting” of their mode of “being there” for us.
I suggest that we are fundamentally practical animals, and that the “real” is well understood as a sign used to indicate what we “count on.”
When I count on the telescope, I see through it.
Thoughts ?

