Tags: entscheidungsproblem

Is CSS Turing Complete? | Lara Schenck

This starts as a good bit of computer science nerdery, that kind of answers the question in the title:

Alone, CSS is not Turing complete. CSS plus HTML plus user input is Turing complete!

And so the takeaway here is bigger than just speculation about Turing completeness:

Given that CSS is a domain-specific language for styling user interface, this makes a lot of sense! CSS + HTML + Human = Turing complete.

At the end of that day, as CSS developers that is the language we really write. CSS is incomplete without HTML, and a styled interface is incomplete without a human to use it.

NSA: The Decision Problem by George Dyson

A really terrific piece by George Dyson taking a suitably long-zoom look at information warfare and the Entscheidungsproblem, tracing the lineage of PRISM from the Corona project of the Cold War.

What we have now is the crude equivalent of snatching snippets of film from the sky, in 1960, compared to the panopticon that was to come. The United States has established a coordinated system that links suspect individuals (only foreigners, of course, but that definition becomes fuzzy at times) to dangerous ideas, and, if the links and suspicions are strong enough, our drone fleet, deployed ever more widely, is authorized to execute a strike. This is only a primitive first step toward something else. Why kill possibly dangerous individuals (and the inevitable innocent bystanders) when it will soon become technically irresistible to exterminate the dangerous ideas themselves?

The proposed solution? That we abandon secrecy and conduct our information warfare in the open.