This was a small but interesting session about the operating system/programming language/useful idea that is Squeak Smalltalk which is built on Smalltalk - a gui developed at Xerox Park back in the late 70's/early 80s. Squeak smalltalk is powerful but it is so adaptable that it was quite difficult to demonstrate (especially as there were problems with connecting laptop to projector).
We saw the "morphic interface" and the editing and programming of objects. Also saw Croquet - a virtual world built on smalltalk in a very SL way. Interesting but at an alpha development stage at the moment so not easy to see.
More practically Scratch - a basic and very widely used visual programming tool - is built on Squeak Smalltalk, and Sophie - an ebooks authoring tool is also built on Squeak Smalltalk.
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