Alan Kay's tribute to Ted Nelson at "Intertwingled" Festival

Caption notes

In this tribute to Ted Nelson, Alan Kay recalls a kind of medium he valued at Xerox PARC: an essay that lets readers try the things it describes. He gives an “active essay” as an example and describes how Smalltalk objects could let painting and animation tools share material. Kay connects these examples to Nelson’s ideas about media. In his view, building a system a group can actually use helps reveal that familiar computer interfaces are only one of several possible choices.