Discussion: Learning curve

•Devices such as MultiTouch “allow an input device to express an enhanced vocabulary of explicit actions, but the user must first learn these new ways of touching or using the input device to fully benefit from them.” (Hinckley & Sinclair, 1999) •Detwiler et al. (2000) - task completion times with the MultiTouch keyboard were significantly slower than those with the keyboard and external mouse, but those using the MultiTouch technology after the keyboard, fared significantly better than those exposed to the MultiTouch technology first.