:I think the writer means it had its roots in ideas developed in the 50s? It would be much more appropriate to say 60s and 70s, though. [[User:Human|Human]] 15:15, 8 May 2007 (EDT) | :I think the writer means it had its roots in ideas developed in the 50s? It would be much more appropriate to say 60s and 70s, though. [[User:Human|Human]] 15:15, 8 May 2007 (EDT) |