Adding the "api" parameter is also useful if you want to copy the URL to someone else. So you can write such things as: http://sa.column80.com/?q=1860&api=77 Now it is a URL that can be copied to someone else that is not on the same session.
I found out how to do without cookies: Add the "api" parameter to the query string when retrieving a message. You might have to do manually every time, unless you can write a program to do for you.
To continue with poloniculmov's comment, the classical music you are listening to now is the 'good' stuff. If you go and study manuscripts of music that isn't played any more, it's for a good reason. Take Salieri's music for example, it's fairly bland (though the odd piece stands out).
Then we have some crazy music like Gesualdo - his music is quite frankly bizarre to some modern ears (those who have't been exposed to much 20th century music, anyway - I love it). A great film on this by Herzog:
I have never made these kind of mistakes. I have done the things in section 2 and section 19, but I did it on purpose and expected the result, it was not a mistake.
I use Enhanced CWEB for C programming. Many of these things will be caught because you can see in the printout of the book, that there are mistakes. (For example, it typesets octal numbers in italic)
Camera's are banned obviously, including on cell phones.
Though if your point is that someone can always leak, that surely is true. There are thousands and thousands of people with the classified information stored in their brains walking around in public all the time, and they choose not to talk about it. Really nothing at all stops them from just blabbering on about it at the bar after work. People are the ultimate security hole.
All this is does is prevent mass dumps like Pfc Manning did (alright, is accused of doing). He didn't read all of those papers he leaked, he just dumped them on a flash drive and walked out.