Abstract:
On the basis of three physical axioms, we prove that if the choice of a particular type of spin 1 experiment is not a function of the information accessible to the experimenters, then its outcome is equally not a function of the information accessible to the particles. We show that this result is robust, and deduce that neither hidden variable theories nor mechanisms of the GRW type for wave function collapse can be made relativistic. We also establish the consistency of our axioms and discuss the philosophical implications.

http://arxiv.org/abs/quant-ph/0604079

On that topic, Conway held six instructive and entertaining lectures at Princeton:

http://paw.princeton.edu/issues/2009/07/15/pages/6596/index.xml

Luckily, I found the problem really quickly. How?

I logged on from another local computer using the Server Admin Tools. I could access the server! What the problem came down to is this (the image does not depict what was the case!):

In the Server Admin Settings, there’s a tab to control service access. Per default it is set to “For all services” and “Allow all users and groups”. But before the reboot, someone (and I am not going to tell who) ticked “allow only users and groups below”, while the field below was left empty. That meant that no user had access to the login window, at least that is what I assume to have been the problem. I changed the parameter back to “Allow all users and groups” and bob’s your uncle again!

There is a workaround/patch which allows building Macport’s OpenCV 1.0.0 on 64bit architecture, however, without any QT/Carbon support.

See here on the issue:
http://trac.macports.org/ticket/21014
http://tech.groups.yahoo.com/group/OpenCV/message/65895

A ticket is filed at OpenCV on Sourceforge, too:
http://sourceforge.net/tracker/?func=detail&aid=2859071&group_id=22870&atid=376677

Update:
#21014: OpenCV 1.0.0 does not build on snow leopard
——————————————-+——————————–
Reporter: grundmann.matthias@… | Owner: ryandesign@…
Type: defect | Status: closed
Priority: Normal | Milestone:
Component: ports | Version: 1.8.0
Resolution: fixed | Keywords: LP64
Port: opencv |
——————————————-+——————————–
Changes (by ryandesign@…):

Updated and fixed in r64069.

Space mascot Darth Vader

Adding the freshly set-up server to Server Monitor only produces the following error messages:

“Software not installed properly on server”
and
“CANNOT_LOAD_BUNDLE_ERR”

There are some posts about this issue on the web, so I wanted to let you all know what I found out.

One reason for the error can be a faulty DNS configuration. Check this by entering
$ sudo changeip -checkhostname
in your terminal. This might tell you if there’s a DNS problem. You might then refer to the Network Services Administration document on the Apple website, which gives some basic but useful information about DNS configuration.

Another reason might be the following: The Server Monitor tool only works together with a Mac OS X Server operation system that is installed on an XServe. It won’t work with an OS X Server installed on different hardware (as a Mac Pro, which turned out to be the problem in my case).

Please leave a comment.

LISTEN HERE

Still, this is not easy to realise. I will try and explain it as clearly as possible, so that anyone should arive at getting it to run. However, you should be familiar with the shell (called ‘Terminal’) – if not, start reading about it now.

So lets do it. What we need is four pieces of software. The first is Colloquy (http://colloquy.info/, which we install just the usual way in our GUI environment). Second, we need Macports (www.macports.org, which is just a software managment software. We only need it to download and install the following two programs). Third, Tor (https://www.torproject.org/, the software for connecting to proxy mixes). Fourth, Socat (http://www.dest-unreach.org/socat/, which is a software that can act as a network connections interface between other programs).

What we will build might look like the following:
(Colloquy) — (Socat) – (Tor) – (Tor Proxy)
The first three brackets show software which will run on our computer. As you can see, Socat will establish the connection between Colloquy and Tor, which will then connect to the Tor proxies on the web.

Now to the installing, configuring and running:

1. Get Macports and install it. You can get helpful info here: http://guide.macports.org/.

2. Via the shell, install Tor and Socat using Macports:
:~ sudo port install tor
:~ sudo port install socat
Both installation processes will take a while.

3. Configure and run Tor: See whether there is a file /opt/local/etc/tor/torrc. If there only is one called torrc.sample, copy it to the name of torrc:
:~ cp torrc.sample torrc
Then, run Tor:
:~ tor
The process should tell you something like:
“Tor has successfully opened a circuit. Looks like client functionality is working.”
Leave that terminal window open and get another one (cmd-n). You can stop the Tor process by ctrl-c.

4. Run Socat by entering:

:~ socat TCP4-LISTEN:6666,fork SOCKS4A:localhost:SERVERNAME:6667,socksport=9050

At the place of SERVERNAME, you have to enter the name of the IRC server you want to connect to.
Leave that terminal window open, too. You can stop the socal process by ctrl-c.

5. Configure Colloquy
Right-click in the Connections window to make a new connection. For the server name, enter ‘localhost’, and 6666 as the port number.

6. Chose that connection and click ‘Connect’. Now you should connect to the required server. Go into any room (or open one yourself), right-click on your user name and click ‘get info’ to make sure your IP and hostname are those from the Tor proxy you use (i.e. not those ones that your ISP provides you with).

See info on this issue on the web:
http://www.learnsecurityonline.com/index.php?option=com_mamboboard&Itemid=69&func=view&id=997&catid=41
http://blog.oneinsane.net/?p=14
https://wiki.torproject.org/noreply/TheOnionRouter/TorFAQ#head-1793e1e8a4701ba463b5b82b33f59e787ff752f9

Can you see Haidinger’s brush?
http://en.wikipedia.org/wiki/Haidinger’s_brush

Reminds me of birds using skylight polarisation for navigation: Skylight Polarization Patterns and the Orientation of migratory Birds