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Cryptographic security with end-users holding their keys isn't an available feature for modern finance.


Fingerprints like this: https://amiunique.org/fp


Knowing what fonts / styles any one author uses could be used to group together internal intelligence structures.


No conviction needed in civil forfeiture.


Silicon is not the best transistor material ever. For example, gallium arsenide can run at a switching frequency of 250 GHz thanks to faster electron velocity and higher electron mobility. https://en.wikipedia.org/wiki/Gallium_arsenide#GaAs_advantag...


You can create some pretty high frequency transistors (BJTs) with Indium Phosphide (InP) (ft > 600GHz, fmax > 1THz). See page 33 of:

http://www.ece.ucsb.edu/Faculty/rodwell/publications_and_pre...

...for examples of some 600 GHz circuits, and:

http://www.semiconductor-today.com/news_items/2014/OCT/NORTH...

...for a >1THz circuit using InP HEMTs.


Wow that's crazy.

I wonder how you even test a 1THz amplifier. Also what kind of natural noise might exist in those bands


> I wonder how you even test a 1THz amplifier.

The usual schtick is to measure the S-parameters a slower speeds and extrapolate out to the cutoff. (see chart 21 from the link above: http://www.ece.ucsb.edu/Faculty/rodwell/publications_and_pre...)

For the digital people, building a ring oscillator with N stages will cause the output to divide by N, and just make sure that f/N is in the range of your oscilloscope.

To actually measure things up in the THz range directly, there are more exotic methods: Superconducting bolometer is one that I've been involved with. But those are a PITA for a bunch of reasons.


>I wonder how you even test a 1THz amplifier.

Most likely using a mixer or some other non-linearity to down convert into the frequency range of your spectrum analyzer.


And how do you get the 1THz signal in the 1st place? Maybe upconvert as well?


Does 'Heisenberg' or some other theory limit the top frequency, if so, what's the limit?


I, for one, have a Germanium transistor in my 1964 Accutron Bulova watch. So there!

http://www.decadecounter.com/accutron/history.htm


Old joke: It's not that Germanium has a bad bandgap, it's just that room temperature is wrong.

[As it turns out, having a decent native oxide is also a winner.)


> thanks to faster electron velocity and higher electron mobility.

How does this effect energy transfer? This is the metric I assume most people care about as it is typically much faster than an electron can move.


"Best" is a funny word, because it means different things to people who care about different things. Silicon can be built with better gates / insulators than gallium arsenide, so if that's what you care about, silicon is better.


Kenneth O. Stanley and Joel Lehman have a great book out on measuring novelty, and using it to search large parameter spaces for interesting behaviors.

http://eplex.cs.ucf.edu/noveltysearch/userspage/ http://www.amazon.com/Why-Greatness-Cannot-Planned-Objective...

I'm a big fan, and would love to talk about this anytime.


I wonder how many people mistakenly bought it as a self-help book :)

It looks very interesting. What do you feel are the main take-aways with regard to reinforcement learning?


Gavin argues that 1000x is possible. With the latest features of header-first syncing, and simultaneous multiple downloads of blocks, we're doing pretty well.

https://blog.bitcoinfoundation.org/blocksize-economics/

In the future, the blockchain inital sync should be torrented by default.


Bitcoin.


Not an effective store of value, too volatile.

Plus, somebody has to trade the cash they get for bitcoin, and then they're responsible for the stack of cash they can't do anything with.


It's a bit too soon, but at some point, one of the large banks(probably coinbase or circle) will be issueing USD on the Bitcoin chain. At that time, the pot-shop will accept BTC, which will immediately convert into COINBASEUSD. Problem solved. Junseth articulated this pretty well: http://junseth.com/post/109579766177/the-blockchain-isnt-goi...


I'm unclear how you got from someone's blog post to "one of the large banks will be issuing..."?


Bitcoin is an amazing Payment Mechanism. But it's not a good unit of account, and possibly not a great store of value. As such, the solution to the problems posted in the parent will likely involve transmission of USD over the Bitcoin network. Banks will be the ones to do this.


When you say, "one of the large banks" I think of Chase, BofA, Wells Fargo, etc. And, my experience with these entities is that it takes 3 days for them to do ACH transfers (well, the originating account is debited ~immediately, but the destination account doesn't see the $ for 3 days). YMMV.


There are easy to use solutions on the market for accepting bitcoin payments and converting instantly to USD. Bitpay and Coinbaes both do this. On Bitpay it goes straight to your bank, on Coinbase you can do the same thing or even leave it on the site as USD to be withdrawn later. You can change the bank you're withdrawing to at any time.


Yes, laundering money through Bitcoin is surely the way to get the Federal Gov't to look on them fondly.


Too volatile and does not really solve the problem. You need to establish credit, be able to write checks etc. Bitcoin is not going to fix that.


BitShares does solve, or try to solve the volatility problem (with BitUSD) but that Blockchain is not big enougth yet, and credit is also not happening at the moment.


Bitshares does not solve the volatility problem: http://prestonbyrne.com/2014/08/17/dont-walk-away-run/


I dont really think the arguments in that blogpost are very good. BitUSD will give you a lot of stability compared to any other blockchain.


Maybe if the early adopters actually spent them into circulation, rather than treating them as an "investment", waiting for the "mainstream" to buy them at higher prices.


Most early adopters I know spend their Bitcoin at a reasonable rate (although they may purchase more to keep their reserves up).


Because the blockchain is the pinnacle of plausibly deniable liquidity.


Tumbling and trading through other blockchains seems like it should be pretty robust.


At least you have to be physically present to steal or lose cash.


Exit the financial system. Use Bitcoin.


Not realistic if you run a business that actually operates in the real world.


I'm not sure what you mean exactly. Rome was not built in one day, but with small steps. If you wish change then you take small actions that of course do not build a palace today, but might do in 10 years.

That basically translates to use bitcoins alongside dollars and slowly transition to bitcoins only.


Why are bitcoins a solution to a corrupt criminal justice system?


Yeah, I've never understood the logic that using Bitcoins insulates someone to the normal financial system. If you want a loan, put money in a bank account, or hedger risk, or do anything with your money that isn't just moving it from address to address, it is still needed to have banks.

Or have cryptocurrency fans figured out a solution that I can't think of now.


It's similar to the idealist trope that tearing everything down to rebuild it will somehow not be subject to corruption and perversion the next time around. As though they've found some way to control human nature. It's unavoidable systemic entropy.


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