27 JUL 2018 by ideonexus

 Redundancy of English language is a Goldilocks zone for C...

In Shannon’s terms, the feature of messages that makes codecracking possible is redundancy. A historian of cryptography, David Kahn, explained it like this: “Roughly, redundancy means that more symbols are transmitted in a message than are actually needed to bear the information.” Information resolves our uncertainty; redundancy is every part of a message that tells us nothing new. Whenever we can guess what comes next, we’re in the presence of redundancy. Letters can be redundant: because Q ...
  1  notes
 
12 DEC 2017 by ideonexus

 The Consensus of Cyberspace

In the real world the empty page might scare the writer. as the blank screen might intimidate the programmer, but now individuals found themselves in the position of having to "boot up" an entire universe of meaning, without any easy reference to the constellation of familiar objects that tend to reinforce the tentative definitions obf newly ereated artifacts. Say, for example, one wished to create a chair in cyberspace, circa 1985. The most that can be said is that this "chair" won't look ve...
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31 AUG 2013 by ideonexus

 COBOL as a Programming Language

I worked with COBOL near the end of my last contract and found aspects of it fascinating compared to today's languages. Everything is about structures that map directly to the bits on disk, with fine grain control on precision and data types. But then the language reads as a series of macros where you don't have to remember the low level details: do this to this, put this here, if this do that. It's also a terribly difficult language to parse because it was designed for ease of use by humans...
Folksonomies: history computer science
Folksonomies: history computer science
  1  notes

Comment captures what's interesting about it historically, how early programmers needed algorithms to handle all the bit-switching.

16 JUL 2013 by ideonexus

 What is a Person?

What is a person? This seems like an easy question, but appearances can be deceiving. Throughout the long sweep of human history, the answer to the question of what a person is has continually changed. Was a woman a person, or was she a piece of property? Or was she even a liability, something that had to be compensated for with a dowry before a man’s family would agree to take her on? Was a man alien to their immediate culture a person? Not if you were of African descent in the United State...
  1  notes

A great passage on the history of personhood and its possible future.

06 JUN 2012 by ideonexus

 The Immune System

An immune system of enormous complexity is present in all vertebrate animals. When we place a population of lymphocytes from such an animal in appropriate tissue culture fluid, and when we add an antigen, the lymphocytes will produce specific antibody molecules, in the absense of any nerve cells. I find it astonishing that the immune system embodies a degree of complexity which suggests some more or less superficial though striking analogies with human language, and that this cognitive system...
Folksonomies: immune system physiology
Folksonomies: immune system physiology
  1  notes

Enormously complex and acts independently of the brain.