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[The last 3 given foundation givens of KEEPSANE¹ were

(1)  I exist.

(2)  I can perceive.

(3)  I can feel.  ]

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Here are the final 2:

(4)  I can think.

(5)  I can choose.

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But for more you need to use the DOOR.

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   [MORE]

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   [To repeat the above]

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   (4)  I can think.

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   First, don’t be alarmed if some of these givens seem to overlap. We’ll, at least now, overlook that. Thinking is a complex interaction of dealing with perceptions and feelings (already mentioned) that personally arrive to the one who, yes, knows he’s receiving and acting upon information mainly, but not exclusively, from the world around him, or outside his body. Now if we’re beginning to sound a little silly, remember we’re invading the world of philosophy, and some moments are like this. The one hundred billion (that’s 100,000,000,000)² or so neurons, or nerve cells, that are busy working inside each of our softball-sized brains, are networking by means of trillions of connections receiving and sending messages so the rest of our bodies can successfully move ahead minute by minute, day by day, year by year, for 70 or perhaps 4 score revolutions of the Earth around the sun.

   And while we’re able–like now–to strip words off a screen, like here, we are surviving more or less successfully and reproducing so that others may have the same opportunities in the future.

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   (5)  I can choose.

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    One key element still remains–and to some of us it makes all the difference in the world. From all real packages of stimuli in the world, A, B, C, and D are received and provoke automatic reactions, or as some say activate instincts; but then there’s E, F and “turning our heads” G…M….R,S,T…V,W, X… Z…2…#…and 7.  From what appears before me–since I am not a tree or a stone, but, as declared in (Given #1), I am “moving around,” I must choose from what comes my way. One cannot take every path at the same time.

   Is all my direction fore-ordained, or fixed?³  No one, absolutely no one can absolutely predict all the “movements” I will make as I rise from my chair, make my way down the stairs, out the door as I walk to my car, open the door, and drive away.

   And that’s to say nothing about what I will ponder along the way.

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   ¹ “KEEPSANE” That’s Knapp’s Elementary Existential Philosophy Simply And Neatly Explained. “Existential” is the big word we need to keep a smidgen of respectability to what will follow. Every package of thought has to start somewhere.  Existential philosophy in brief begins with accepting the reality of human existence. (Philosophers who earn their living by philosophizing would insist that I precisely define at least 6 words in that last sentence.) But I don’t see any of them around. I will add this much here: Every adult person has a worldview that, if necessary, can be described one way or another. If put on the spot, at one end of the logical spectrum, a person may declare, “As I walk out of the door each morning, I put a wet finger in the air and go whichever way the wind is blowing. If somehow I can convince the wind to lead me to my class, I will teach a lesson on differential equations. If not, I won’t.” We feel the bar is too low to accept that. We’ll try to raise it a bit. And the journey to attempt that is exhilarating.

   ² 100,000,000,000 ?  Neuroscientists have seemed to passed this number around as if the first bean-counter really knew his stuff. One scientist, however posited only 80,000,000,000 neurons in each head.

   ³ Predestination or freewill? If a shelf of books has been written about other theological topics, a library has been filled with information about this issue. Whatever the neuroscientists, and Theory-of-Everythingers say about all behavior being determined, I reject this. No one can exactly predict exactly what I will do or think about tonight, or tomorrow, after I get up from chair. And I have a doctor of philosophy degree that backs me up.