The mouse is useful for video demonstrations because you can see what operations are being selected. We actually were convinced Eve would be better than most la

The mouse is useful for video demonstrations because you can see what operations are being selected. We actually were convinced Eve would be better than most languages for keyboard use because A) most programs were very short, so fewer keystrokes over all and B) most programs could be built with autocomplete. The implication here was that we could enable programming on a phone with very minimal keyboard input, and mostly touch. Madlibs Eve was an example of this, where building a program could be done over SMS or chat.