Ian Miers

@secparam

Zcash foundation. Soon to be Professor @ UMD CS. Applied cryptography, computer security. Founding scientist of Zcash.

Vrijeme pridruživanja: travanj 2012.

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  1. 30. sij

    Narrator: but actually that is baby talk.

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  2. proslijedio/la je Tweet

    UMD has more security openings! They have a really awesome group there , Dana Dachman, Michell Mazurek, , , , . It’s one of the best places to work on security/crypto/PL research !

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    28. sij

    Dev Fund second round of voting results are in! 🗳️🎉 1. YES (support ZIP 1014) 2. ECC 35%,Grants 40%,ZFND 25% 3. New Committee? Split vote: 34/34/20 4. SHOULD NOT be a funding cap 5. If ECC declined: go to Grants

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    Alright, actually unpopular opinion thread time. Might delete later. Allowing pets in the office is not an inclusive policy.

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  5. 24. sij

    The year is 2200. With budget cuts, increased courses sizes, and the lack of winters much less winter breaks, academia has changed significantly. But parts of the old tradition still shine through in odd ways. Once every 7 years, you can take a sabbatical: from slack.

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  6. proslijedio/la je Tweet
    28. ožu 2019.
    Odgovor korisnicima i sljedećem broju korisnika:

    The point of Turing-completeness isn’t that any useful thing actually requires Turing-completeness. It’s that different useful things require different features, and Turing-completeness lets you (somewhat) avoid the problem of guessing what features you need to provide

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    20. sij

    This is a terrible take. It totally misses the key point: handles >10k submissions and >25m downloads per month at a cost of only $1.3m /year. spends $193m (!) on publications, and spends $33.7m. Something stinks.

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  8. 22. sij

    What the actual headline should have been.

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  9. 19. sij

    Facial recognition is just a return to village life where everyone knew your face .... and the king had a mage who knew everyone's face (and travels) in every town ... and the mage tracked the king too and warned his accomplices if their faces were tracked. And you were afraid.

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  10. 19. sij

    Really, the house always wins. Credit card fees are ~3 to 4%. Merchants bump prices to cover this. The best estimates for points value I've seen, if you do the leg work, is 1 point = 2 cents via miles. Maybe 3 if your (occasionally lucky. The house wins, people paying cash loose.

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  11. 19. sij

    Well I’m pulling this entire thread out of thin air, but: the main point of loyalty programs is now probably to gamify you into flying or spending more. People are lazy, no one who’d buys normal priced flights does that kind of leg work. You won't either. The house always wins.

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  12. 19. sij

    But wait, the entire point of airline loyalty programs (and hotel’s) was to prevent these market gaming shenanigans and stop people from deferring buying flights for dollars. Why let this happen? …

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  13. 19. sij

    But credit card rewards let you bypass the loyalty bit and convert points to miles 1 to 1. And you can convert after comparison shopping. So 30k points might buy a ticket that retails for $600, but since the airline is desperate, it’s 30k miles. That's 1 point = 1 mile = 2 cents

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  14. 19. sij

    Miles are also valued at ~1 cent. But seat prices (in miles) vary based on how desperate airlines are. So can you comparison shop to get the cheapest flight to LAX? No. Miles are per loyalty program: Delta's cheap LAX trip can't be bought with miles earned eating bad United food

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  15. 19. sij

    Excess seats airlines cannot sell are offered to customers priced in miles not dollars. Because you have to put in a bunch of time flying to earn miles and your boss won't reimburse you for miles, you don't spend them on work travel and it doesn't mess with their market too much.

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  16. 19. sij

    Airlines/Hotels sell seats/beds above cost to make profit. Sometimes they can't sell all of them. When this happens, they'd like to sell at any price above their marginal cost(e.g. fuel). But If they do this too much/for too many, they undercut the market. Enter loyalty programs.

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  17. 19. sij

    Credit card companies skim ~3% off every transaction. You get ~1 point per $ spent. They let you spend them on say amazon at 1 point = 1 cent. Surprise! you only got a 3rd of the fee you indirectly paid back via inflated prices.:( So why are the traveling dicks excited by this?

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  18. 19. sij

    Have a fancy credit card? Wondering what the hell points are, what they're worth, and how best to use them? Me too. Points are an "arbitrage" opportunity on the discounts airline/hotel loyalty programs use to fill (premium) seats/beds they can't sell at market rates. Confused?...

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  19. 18. sij

    There're two issues with face recognition. First, it makes surveillance and tracking cheap and easy. Second it shifts power towards entities that are even less accountable. It will be abused. Like Clearview monitoring their app to spy on the police spying on us. That's bad.

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  20. 18. sij

    How orwellian is clearview's new face surveillance app? Well, when the police demo'd it to a journalist by running their face through it, Clearview called them to see if they were talking to the media.

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