proof of work vs proof of stake: proof of work is like all the magnetic ink, magical threads, watermarks, etc... getting all of this stuff takes effort and work
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the weakness of pos then is that it's honor system based. the stake is necessary b/c otherwise there is no risk. if a famous person gave you a stack of pos dollars you'd be like "ok sure" but if a homeless guy does so you'd be like "nah do u have venmo instead"
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with pow on the other hand the currency itself embeds a degree of proof to its validity. so much work went into it that it acts as a signature that can only be produced by a Higher Authority though for the dollar bill, even this can be overcomehttps://en.wikipedia.org/wiki/Superdollar …
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between "full decentralization" and "full centralization" there likely exists a middle ground where the bulk of the excess friction and waste of a decentralization is reduced but the system is more trustworthy than a fully centralized one
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the u.s. dollar as cash ironically serves this purpose in many countries the fiat of the central gov is considered trash but the dollar, with all its fancy security threads and watermarks has enough embedded proof-of-work that it's valuable despite being centralized as well
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i'd rather use google drive than bittorrent or ipfs bc the user experience is so much better despite the centralization risk the downside is in places where google isn't trusted like china, there are more hoops to jump through
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google has enough marketcap/reputation at "stake" that it's good enough for files even for more important things like savings & equity, vanguard, bank of america, fidelity, schwab, etc... all have enough "stake" to be trustworthy the problem is... so did lehman brothers...
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