(no subject)

(via Vlad) An instructive interview that shows how people make mental mistakes by extrapolating technology solutions with "more-of-the-same" thinking:
http://archive.is/6M8mg#selection-1375.7-1381.541

“
We spend our time looking for threats against a company. We look for things that might be active inside the company that would cause us concern, and then of course we look to respond—detecting, containing, and deflecting those threats as much as possible while at the same time keeping in mind that our executives and board of directors always want to know what's going on with security in the company.

Generically, every breach has the big data problem. For example, in a malware incident that results in a breach, the malware comes in and spreads across the environment.

When that scope [of investigation] expands, the security team typically has to deal with a sudden increase in big data -- logs, alerts, etc. -- making budget planning critical. Right now I'm planning my budget for next year, and I hope I ask for enough disk space and computing power so that the infrastructure is prepared for future attacks. ... Burst capacity is really critical for the security team who needs to find answers quickly.

Basically, she assumes that data security and hardware capacity/budget are "entangled" linear orders.

also see https://timelets.dreamwidth.org/682944.html

upd: the alleged exploit https://qz.com/1073221/the-hackers-who-broke-into-equifax-exploited-a-nine-year-old-security-flaw/

Surface equivalent to bulk

Maldacena discovered that the boundary and the bulk are completely equivalent.... the relatively simple, gravity-free equations that prevail on the boundary contain the same information and describe the same physics as the more complex equations that rule the bulk.

“It’s kind of a miraculous thing,” says Van Raamsdonk. Suddenly, he says, Maldacena’s duality gave physicists a way to think about quantum gravity in the bulk without thinking about gravity at all: they just had to look at the equivalent quantum state on the boundary.



http://www.nature.com/news/the-quantum-source-of-space-time-1.18797

== link thanks to lxe

As a side note, I never thought about the equivalence of information and energy wrt entropy. There's a vague analogy here with Hayek's idea that prices convey information. Moreover, we can think about Arrow's technical change hypothesis as two stage process: productive absorption of information (learning curve) and productive absorption of capital (cumulative investment).

(no subject)

I think this figure is going to be important for many fields outside of quantum physics because it models a system's capacity to accommodate additional energy/information.




https://youtu.be/9crggox5rbc?t=29m44s