Posted by:
Brother Of Jerry
(
)
Date: September 22, 2019 08:20PM
Sorry to take so long in getting back to this. Been a busy weekend. I'll start at base response indent in the thread since my and Henry's comments got transposed. As I read back through the thread, Elder Berry and dagny and I are pretty much in agreement, and I don't know that there is all that much more to be said.
Not that that has ever stopped anyone here. :)
Above I gave examples of 1+1 equal to 2, 1, or 0, depending on how you define "+", and gave real world examples of where each definition makes sense. 1+1 = 2 is often given as the pinnacle of obvious truth, to which everything else should be compared, when it is not absolute truth at all, but one of a number of equally useful alternative definitions.
In fact, 1+1 = 1 and 1+1 = 0 are such useful definitions, that they have their own names and I dare say that every electronic computer CPU has implemented all three versions of "+".
1+1 = 1 is called "OR", or logical addition. The symbol often used for it is "+", just like regular addition. It got the name OR because when operating on a single bit, it matches the or operation in logic. However, it is used for a great many other purposes (bit manipulation techniques on long strings of bits)
1+1 = 0 is what is called Exclusive Or (XOR). A two-switch hallway light is a simple physical implementation of an XOR. It also uses the "+" symbol, with a small circle drawn around the +, a mnemonic to remind the user that 1+1 = 0, not 1.
A third operator that I did not give an example of is known as logical multiplication, or AND. Again, the word "logical" gets put in one of its names because it behaves like the word "and" both in English and boolean logic. However, it is more commonly used for manipulation of long strings of bits in a computer, so often it is only coincidentally related to boolean logic.
My point: 1+1 = 2 is not immutable truth, but it is an extremely handy relationship for a lot of purposes. The other definitions are also extremely handy for their own purposes, and equally "true" in their own domain.
BTW, Henry objected to my examples somewhat because the other definitions were not "counting". Yes and no. They were not counting in the sense most people think of, but they were clearly manipulating symbols. It is possible, in fact to implement a standard add operation in a computer using only AND, OR and XOR. It is ugly and complicated, but possible. They are all closely related.
Also, some numbers cannot be operated on mathematically even though they are plain vanilla numbers. You can certainly add two phone numbers together. Mathematically, perfectly well defined. Practically, it makes no sense whatsoever. Not all numbers are compatible with arithmetic. Not all math requires numbers. When I took group theory, the professor joked that the only numbers in the book were the page numbers. He was not far wrong.
So what does this have to do with Henry's defense of free will? Not much, I just like doing math tutorials! I guess if there is a point, it is be careful about claims of absolute truth and absolute necessity.
Plane geometry, elliptic geometry, and hyperbolic geometry are perhaps a better know example of the same thing. Plane geometry was obviously the true geometry, until mathematicians got serious about trying to prove that the other geometries were nonsense, and discovered, much to their surprise, that the other geometries, in the right circumstances, worked perfectly well, and plane geometry was the one that didn't work in those circumstances. Again, be careful about supposedly self-evident truths.
OK, enough with math.
I gave the example of Galileo's inquisitors feeling that the earth being the center of the universe was a self-evident truth. Henry stated that their belief was theological, not based on evidence.
They had some evidence. It is easy to predict the motions of the sun and moon, assuming the earth is at the center of the rotation. For the moon, the earth is effectively the center of rotation, so no problem. For the sun, the basic math (oops, sorry, math again) of either rotating around the other is the same, so again, no problem, as long as you are not trying to explain the laws of gravity.
However, for the planets, assuming the earth is the center is a real mess. Mathematically, it can be made to work, but you get really ugly equations, planets in "retrograde", all manner of complications. But astrologers and astronomers actually figured out a passable approximation to that truly ugly math.
So, Galileo's opponents did have some evidence on their side. But their argument was indeed mostly theological. God created the earth so that He could create humans, and if we obeyed God, we got to return to heaven. Demoting the earth to just another planet going around the sun was demoting God's creation. Blasphemy, sacrilege, and an attack on civil order and morality!!
Closer to home, most of us who have left Mormonism had one or more (usually many more) people who basically acted like there was now nothing keeping us from raping, murdering, stealing, doing drugs, and we were surely on our way to shuffling down street gutters in soiled clothes begging for spare change.
Atheists get that same general reaction from believers. I was going to say Christian believers, but I don't know that the flavor of the religion even matters. Believers feel atheists are a threat to decency and morality. Atheists, meanwhile, look at the believers and think "oh, please...."
I bring this up because I get the feeling that the defenders of free will are deeply invested in the rightness and absolute necessity of free will. Without it, civilization would be impossible, etc, etc.They think people who don't accept the existence of free will are not just wrong, but dangerous. Much like TBMs treat exMos.
My POV is that yes, we are fundamentally unpredictable individually, though probability type predictions can be made, and the larger the group of people, the better our predictions can be. But, it is possible to describe what happens with individuals and with groups, without having to resort to free will. That POV may be wrong, and may turn out to be a possible POV, but not very useful, or it may turn out to be the best way to describe behavior. I don't know. It is a work in progress. I'm pretty sure that, like atheism, it is not dangerous. The non-free-willers will not be shuffling down the gutter begging for spare change.
And if this doesn't make much sense to Henry, it didn't make all that much sense to me. Too big a topic, and I find my mind going off in 20 directions at once. And of course I have no hope of convincing Henry of my obvious correctness. He lacks the free will needed to see my POV. :)
Edited 1 time(s). Last edit at 09/22/2019 08:24PM by Brother Of Jerry.