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To watch Engelbart's movie now, across that very network which has explanded beyond belief, is a thrilling moment. But it's also an opportunity to scrutinise the typist in action. [] For the most part, he is conscious of the audience and produces a smooth presentation but every now and then the computer claims all of his attention and private smiles and frowns and queries flow over his features as he engages wholly with the system, muttering to himself, talking to the machine...
In the book I provide three urls in relation to these 1968 movies but in fact all of them are intriguing. See http://sloan.stanford.edu/MouseSite/1968Demo.html
