Originally Posted by
trish
Of course opinion enters into every sort of judgment human beings make. When I measure the width of a room I have an opinion about what sort of accuracy will suffice for my purposes. If all I want to do is estimate how roomy it will look if I buy that leather sofa I have an eye for, then in my opinion I don’t need a measurement that’s accurate to the nearest micrometer. I’ll just use a tape measurer. I bought my tape at True Value. It’s my opinion that it’s reasonably accurate for my purposes. Suppose I find the room is 20’6” wide plus or minus a couple of inches. That’s my opinion based on a single measurement. It’s also the width of the room. Am I proud of that knowledge? Naw. Would I have more pride if I measured it using a laser-echo device and getting an answer in angstrom units? Of course not. Pride just doesn’t enter into it. (Besides, the distance between the two walls varies by more than a angstrom depending on where the measurements are made and the temperature of the room when the measurement is made. In any case, it’s my opinion that the extra decimals are irrelevant to my purpose.)
Okay but that’s a rather mundane example. What about the theory that allows us to build those lasers that can be used to measure distances with nanometer accuracy? Does opinion enter into the theory behind light amplification by stimulated emission of radiation? Yes, it does. First, any physical theory starts by making simplifying assumptions based on the investigator’s opinion that for the purposes of understanding the simplifications are warranted. Second, experimental tests of the theory are subject to various opinions and judgments, just like those that enter into measuring the width of a living room. That’s why it’s always nice to have teams that want to verify the theory and teams that want to disprove the theory test it independently. In the end we have several models of light amplification by stimulated emission of radiation. Each model suited to different domains and scales of accuracy. Each has been tested and is based on reams of evidence. Human opinion and judgments have had a hand in the process from the very start. Should anyone be proud of this knowledge. I’m not, I didn’t have anything to do with it, even though I did study a few of the models in school and ran a test or two as a learning experience. I think the teams who did the real testing can be proud of their work. But that’s somewhat different from being proud of the knowledge, because there is no absolute knowledge here...just some mathematical models that capture our current understanding and some physical models (i.e actual lasers) that seem to verify that understanding at the moment. I think Einstein and the other founders of the theory could have rightfully been proud of their work as well, but I also think Einstein might be the first to point out (were he alive today) that he can’t be proud of his knowledge because he has none in any absolute sense of the word.
Here are some related questions. Does opinion enter into faith? Should one be proud of one’s faith? Should one be proud to be a Christian, or is that empty vanity? If you have faith that a god exists does that mean you’re certain she or he exists? Is that certain knowledge?