wedrifid comments on A problem with Timeless Decision Theory (TDT) - Less Wrong

36 Post author: Gary_Drescher 04 February 2010 06:47PM

You are viewing a comment permalink. View the original post to see all comments and the full post content.

Article Navigation

Comments (127)
Tags: timeless udt tdt

Comments (127)

You are viewing a single comment's thread. Show more comments above.

Comment author: wedrifid 05 February 2010 05:38:01PM 0 points [-]

EDIT: Oops! pengvado is right. I was thinking of the case discussed here, where the random bits are provided by some quantum black box.

Does putting the 'quantum' in a black box change anything?

Comment author: loqi 05 February 2010 07:09:25PM *  0 points [-]

Not sure I know which question you're asking:

  1. A black box RNG is still useless despite being based on a quantum mechanism, or
  2. That a quantum device will necessarily manufacture random bits.

Counterexamples to 2 are pretty straightforward (quantum computers), so I'm assuming you mean 1. I'm operating at the edge of my knowledge here (as my original mistake shows), but I think the entire point of Pironio et al's paper was that you can verify random bits obtained from an adversary, subject to the conditions:

  • Bell inequality violations are observable (i.e., it's a quantum generator).
  • The adversary can't predict your measurement strategy.

Am I misunderstanding something?

Powered by Reddit Powered by Reddit