Bitcoin and Las Vegas have a lot in common
Not really. The money you make on bitcoin are real although I generally agree it is not a great investment. Great speculative trades are still possible and very profitable.
based on thin air.
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Odds in Vegas are probably better, even if stacked in the house’s favor.
Bitcoin and the US dollar have a lot in common.
You might learn from watching this video:
https://www.youtube.com/watch?v=qKhNcu73rJQ