> you have two hands. Every watch ‘the mother of all demos’⁰? Engelbart's system was designed to be used with one hand on the mouse and the other on the chords

> you have two hands. Every watch ‘the mother of all demos’⁰? Engelbart's system was designed to be used with one hand on the mouse and the other on the chordset. Xerox followed this with the Alto, and on to the Star¹, eventually dropping the chordset but with the same model: the mouse and the left-side function key block worked together.² ⁰ https://youtu.be/yJDv-zdhzMY https://youtu.be/yJDv-zdhzMY ¹ http://www.digibarn.com/friends/curbow/star/keyboard/ http://www.digibarn.com/friends/curbow/star/keyboard/ ² https://youtu.be/_OwG_rQ_Hqw?t=54m25s https://youtu.be/_OwG_rQ_Hqw?t=54m25s