Posts Tagged ‘Intelligence’

On zombies

Monday, April 18th, 2011

Woo hoo, I put in tags for my posts. To paraphrase Kurt Vonnegut, perhaps from “Breakfast of Champions,” never write your own index (or do your own tags). It’s too revealing. Who knows, maybe opening comments will be next (hint: no, it won’t be).

I am in Atlanta, and my airplane book for the short hop was Garry Wills’ most excellent “Bomb Power.” I don’t give away too much by re-stating the thesis, that the invention of the atomic bomb substantively changed how the nation state approaches national security. Sort of makes sense; indeed, it seems an outgrowth of what I glean from Diamond’s narrative in “Collapse: How Societies Choose to Fail or Succeed.” When we have enough resources, we have the freedom to organize, to get more freedom. Of course, there comes a point at which we war with other societies, for whatever reason. Then we organize to keep the freedom we have, even if we have to give up some freedom in the process (nicely captured by the mantra “Freedom isn’t free,” which I think is a bit more subtle than its adherents often claim). (more…)

On steganography

Saturday, November 13th, 2010

Isn’t that a cool word? It makes you think of dinosaurs doing dictation, or something. I first came across this word a few years ago when Bancroft and co-workers published a short letter in Nature, “Hiding messages in DNA microdots” (Nature, 399:533 (1999)). But steganography is actually a cryptography method in which you hide a signal amidst a great deal of noise or a great deal of other signal. For example, it is possible to hide messages within digital image files by having some subset of pixels actually encode a letter. (more…)

On molecular computation

Saturday, November 6th, 2010

Like many folks, I was fascinated with Len Adleman’s adaptation of DNA to serve as a computational entity (Adleman (1994), Science 261:1021). This was just really cool, especially in that it both encoded a problem in a nucleic acid, and then asked the nucleic acid to solve that problem based on what I like to think of as ‘hybridization logic.’ This idea quickly permeated the community, leading some to speculate that massively parallel DNA computers would be able to crack the data encryption standard that keeps our money (amongst other things) safe (Adleman et al. (1999), J Comp Biol 6:53). DNA computers (actually, RNA, to be completely wonkish) even surged to the forefront of cultural memes by being included in the Intrepid Class Starship Voyager. (more…)