UT AST 309L - The Origin of Intelligence (54 pages)

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The Origin of Intelligence



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The Origin of Intelligence

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Lecture Notes


Pages:
54
School:
University of Texas at Austin
Course:
Ast 309l - Search for Extraterrestrial Life
Search for Extraterrestrial Life Documents

Unformatted text preview:

The Origin of Intelligence The Origin of Intelligence fi Fraction of life bearing planets where Intelligence develops What is intelligence Propose The ability to model the world including the organism itself Intelligence as continuum related to complexity of organism milestone human level intelligence Amoeba intelligence Later acid amoeba good food The Amoeba s dilemma Insert A taco or a chalupa I can t decide amoeba small here The smarter Paramecium Paramecium InsertWall paramecium Bonk here I ll try this way But not THAT smart Insert paramecium trap here Paramecium trap I ll try this way etc etc Information as Measure of Intelligence Evolution of intelligence increase in information DNA model of organism the program A quantitative measure of bits of information Bit Information in the answer to a yes no question e g Purines Adenine A Guanine G Pyrimidines Cytosine C Thymine T Information Content Unit of Bits 1 base 2 1 codon 6 Virus 103 Bacterium 106 Amoeba 5 108 H Sapiens 6 109 2 codes for proteins 1 2 108 bits of Pages of Books 1 1000 500 small library Evolution produced Increase in information Caveat much of DNA is non coding hard to count Information stored in DNA limited by fidelity of replication Organism Virus Bacterium Eukaryotes Error Rate 10 3 10 6 10 9 10 8 of Bits 104 106 107 108 1010 Sexual reproduction provides safety measure for mutations in recessive genes Further Complications Humans make about 90 000 kinds of protein Now it seems we have only 25 000 genes What s going on One gene can lead to different proteins The mRNA is edited to remove introns Sometimes exons are left out or introns in Splicing controls gene expression More common in more complex organisms Based on Sagan Dragons of Eden Why Brains To get more than 1010 bits or 108 need extra genetic storage Neurons led to brains How is information stored in brains Not entirely clear Neuron fires or not Yes or No 1 bit neuron Neurons are the building blocks From slice of life project Neuron has



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