There is (was?) also Gnokii [1] for old Nokia phones, which I've used successfully. I even managed to port a small part of it to Arduino to send a message automatically (code [2] and write-up [3]), but these days there are shields with much better interfaces than the Nokia FBus (e.g. using the SIM900 chip [4]).
Because it had been posted over a year ago prior to being posted a week ago. And yes, you are right in pointing out that the same person submitted it twice in two days, but the first time it appears that nobody saw it. IMO, this is within the HN repost guidelines, but that's a matter of interpretation.
But I agree with you that "If it gets voted to the front page it is because people want to see it..."
My anecdotal experience is that most may start with math for their first degree, but then (or during) pivot to some related but more applied area like CS, Econ, etc.
The idea is that as time goes by, computers become twice as fast (Moore's law), but problems also become twice as big. With a quadratic algorithm, you will need twice as much time to solve the problems of the bigger size, even on the faster computer. See page 22 of http://www.cs.princeton.edu/courses/archive/spr15/cos126/lec...
I think this whole argument is silly. I really do not think one is fundamentally better than the other. Factor of 2 constants will exist no matter which one you choose. Might as well go with pau http://xkcd.com/1292/
That's not what I was referring to though. I was talking about how detecting the EURion constellation causes Photoshop and printers to not work.
I do not know how guns are manufactured, but from the comments in this and earlier discussions of the story, I assumed that there are parts with common characteristics.
As a result, and unless the resulting 3D models are too many, or if they would result in false positives with legitimate applications, you could require that 3D printers and CAD software refuse to work with them.
Based on the couple of comments below, however, it seems that my assumption that there is a sufficiently common part among firearms is wrong, so I'll leave further comments to the experts.
Setting aside legality and technical issues for a second, in some respects this seems similar to regular printing of currency bills: I find it very likely that the (any?) government would require that 3D printers refuse to print "crucial" parts of a weapon either at the software or at the firmware level.
Of course, with the more DIY and open nature of 3D printers this might be difficult to enforce, but not impossible, at least for the average user.
1: http://www.gnokii.org/ 2: https://github.com/giech/arduino_nokia_6310i 3: https://ilias.giechaskiel.com/posts/arduino_sms/index.html 4: http://www.simcom.ee/modules/gsm-gprs/sim900/