"Programming the Universe" by Seth Lloyd

A Quantum Computer Scientist Takes on the Cosmos

(notes from Kindle)

Table of Contents

Highlight on Page 14 | Added on Saturday, July 20, 2013 9:03:06 PM quantum

TODO Information and Entropy MIT course quantum

DONE Highlight on Page 26 | Added on Sunday, July 21, 2013 4:46:22 AM quantum

Stonehenge may well have been a big rock computer for calculating the relations between the calendar and the arrangement of the planets

DONE Highlight on Page 30 | Added on Sunday, July 21, 2013 1:20:58 PM quantum

One counterintuitive result of a computer’s fundamentally logical operation is that its future behavior is intrinsically unpredictable. The only way to find out what a computer will do once it has embarked upon a computation is to wait and see what happens

DONE Highlight on Page 46 | Added on Sunday, July 21, 2013 2:35:08 PM quantum

But despite their simplicity, they can be programmed to produce patterns of any desired complexity, and the programs that produce these patterns need not possess any apparent order themselves: they can be random sequences of bits.
The generation of random bits does play a key role in the establishment of order in the universe, just not as directly as Boltzmann imagined

STRT Bookmark on Page 56 | Added on Friday, July 26, 2013 10:44:19 AM quantum

Bookmark on Page 59 | Added on Friday, July 26, 2013 9:54:16 PM

useful explanation of macro and micro states, entropy quantum

  • different observers assign different value for entropy
  • total amount of information is invariant though
  • the spread of ignorance is reversible (control-not example)
  • spread of ignorance is mutual information

STRT Bookmark on Page 69 | Added on Tuesday, August 6, 2013 10:19:41 PM quantum

Halting problem applies to gas of atoms (raytracing too)

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