Rien wrote:
Value can only exist in the mind.
It is not a physical property.
I think that value is derived from utility.
We use external symbols to represent value, for example (fiat) currency. But it is not the symbol that has value. The value itself is in our heads.
In general we disagree on value. If we would all agree on value there would be no commerce. Though we might agree on price, we do not agree on value. A baker rather sells its bread, while I would rather buy it. The price is the same to both of us, but the values we place on the utility of the bread is different.
Why do bitcoins have value? because possessing bitcoins fulfills a need in the mind of the bitcoin holder. It does not matter if the bitcoin is virtual or not, that need is present and real. Knowing that other people place a value on bitcoins is for many other people sufficient to place a value on bitcoins as well.
But like water, bitcoins do not have a "value" property that can be measured. Value is all in the mind.
So what is the value of a bitcoin?
For you that is the price you are willing to pay for it or sell it for.
This is a crazy topic.....and I've learned a lot, I hope other people have gotten a lot out of it also.
There was a popular show in America decades ago called "Let's make a deal". It might still be on TV...I don't know.
People would do things to win prizes. Sometimes they would be given a choice, keep their valuable prize, or get to open a mystery box or a door and see what's behind. They could also trade the mystery box or door with other audience members.
Sometimes the mystery box or door had something good behind it, sometimes it was a worthless gag. The point is, whatever they traded for the box/door (the price) had NOTHING to do with what was behind it. The fact that they traded for it, hoped, believed, whatever that they had something more valuable.....this had nothing to do with the value. The value was either there or it wasn't, and it didn't matter how many people traded for it or believed in it. They could not create value with their mind. 99.999% of people watching knew when something was worthless. That's because it was worthless, it was not a matter of opinion. If 0.001% of people preferred the worthless prize...it could only be because that person was completely insane.
Believing a bitcoin has value doesn't give it value. It gives it a price. I can pay 1 million for a t-shirt, but that doesn't make it more valuable.
You said quite correctly above that the price is not the value, then you said the price you're willing to pay is the value. If I'm willing to pay 1 million for a T-shirt, is it worth 1 million? Can I get a million for it, or was I completely stupid and wrong about it's value?
I get that everyone likes to think value is just an opinion and therefore can't be wrong, but then what would you say about me buying the T-shirt for 1 million? Wouldn't you and every other person on Earth know I was wrong to pay that much? If every single person on Earth knows I'm wrong and see that I've traded massive wealth for nothing....am I not wrong? Did I not perceive value where it didn't exist?
If a secluded African village trades the entire village for sea shells, and then scouts out the nearby shore for a new place to live and finds millions of shells.......did they not perceive value where it didn't exist?