The Bitcoin Standard is the first book I've ever read to simply explain the properties that make money valuable.
If there were such a thing as a 'Bitcoin University', Satoshi's white paper would be covered on day one, and this book would be covered on day two.
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https://youtu.be/T4ltMvjGO5YI think bitcoin's limited supply and capacity to hold transparent transactions is what makes Bitcoin valuable. Also, I think the value is not invested in the money, but rather in the technology which investors believe would grow in the future decades.
However, I'm not able to read the book yet. But I have heard of it and said that it was good. I'm planning to read it to further fortify my knowledge.