Re: why can't we erase information?

From: Brent Meeker <meekerdb.domain.name.hidden>
Date: Mon, 10 Apr 2006 00:03:47 -0700

Russell Standish wrote:
> Unitary evolution preserves information. It is only through
> measurement by an observer that information can be created or
> destroyed. Usually, the second law is interpreted as the destruction
> of information (anyone observing a closed system will over time know
> less information about the system), so it puzzles me that you have the
> sign the other way.

What? You're saying that if I observe a system, then I know less about it. You
must be using some non-standard meaning of "know".

Brent Meeker


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "Everything List" group.
To post to this group, send email to everything-list.domain.name.hidden
To unsubscribe from this group, send email to everything-list-unsubscribe.domain.name.hidden
For more options, visit this group at http://groups.google.com/group/everything-list
-~----------~----~----~----~------~----~------~--~---
Received on Mon Apr 10 2006 - 03:04:46 PDT

This archive was generated by hypermail 2.3.0 : Fri Feb 16 2018 - 13:20:11 PST