Macbook chiclet keyboards are the worst possible keyboard in terms of key placement and shape (flat-top keys) in terms of typing speed and accuracy. There is a

Macbook chiclet keyboards are the worst possible keyboard in terms of key placement and shape (flat-top keys) in terms of typing speed and accuracy. There is a good paper about this in the first edition of Handbook of Human-Computer Interaction (copy is at home right now, will update with a better reference later). Even the "skateramp" shape of classic Thinkpad keyboards is not as good for speed and accuracy as the bowl-shaped keys of older keyboards and typewriters. The "skateramp" shape was a cost-cutting technique to enable keys to be cheaply labeled (bowl-shaped keys need to have the labels molded in in a two-step process: https://deskthority.net/wiki/Double-shot_molding https://deskthority.net/wiki/Double-shot_molding).