Here are two new articles I'm adding to the show notes.

One about the starting history of unix and symmetrical philosophy: http://people.fas.harvard.edu/~lib113/re...unix2.html
The second about the relation with open source philosophy: http://people.fas.harvard.edu/~lib113/re...unix3.html

Both by the same author.

The last one brings a new topic to the table: When UNIX was first distributed no help was provided and so people started to created that "hacking" community around it.

Quote: "It was very common at the time. This was in the days when UNIX was still treated by the Bell System as, `Oh, just something we happen to do for our own internal use. You can have a copy if you want, but if you got problems, don't bother us.' And the result was if you wanted UNIX support you did it yourself or it didn't happen."(63)