Toknormal, you are clueless. You said that fungibility isn't "invisible money", and further went on to say that the money changing hands validates the system(No money, no trust or something similar). That is Monero, with Monero you see money moving, but you don't know where. One one hand you're explaining how fungibility is in your view, and that's exactly how Monero works. Then, on the other hand you're saying Monero is "invisible money", thereby contradicting everything you've previously said. I know you're doing this because you're a Dash fanboy, and the coins are in competition, but at least don't contradict yourself.
You seriously need to go and rethink your arguments, you're contradicting yourself like a fool.
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Go learn cryptography.
It isn't me you need to sell this idea. It's the universe of potential adopters.
They are not interested in cryptography and have no intentions of "learning" it. Thats why - in the absence of a trusted third party - you need public consensus to assert the veracity of any monetary medium.
Look, you're quite honestly...clueless on the concept of fungibility. It looks as when you describe "opaque" blockchains like Monero's, you think of a brick wall or a black hole. In case you didn't know, that's not what it is. By Opaque, it means that transactions done between sender and receiver are unable to be connected to each other. So the money can be seen, but the beginning and end destinations cannot i.e, you can see just money, nothing else but money moving back and forth.
This is what you said:
"What inhibits Bitcoin's fungibility is not the fact that the blockchain is transparent, it's the fact that detectable patterns can build up over time which allows certain parts of the money supply to be identified distinctly from others. The answer to this problem isn't to bury the whole blockchain and make it invisible - because then you don't have money any more - it is to mitigate the formation of sustainably traceable patterns of monetary movement."
--- Monero does exactly that. With Monero there is no "sustainable traceable patterns of monetary movement". With Monero the only thing that's visible, is the money supply, and the things that are invisible is... well everything else.
You've basically explained that Monero fits your definition and view of fungibility perfectly. Do you see that now? Absolutely clueless, and very, very disappointing on your part.edit-