Spot on. Maybe the author didn't notice most users don't interract with a computer with a keyboard. They use a mouse, a touchpad or a touch screen.
I use the keyboars a lot, but I keep my mouse. Why ? Cognitive load, that's why. I can remember all the shortcuts for all the apps. But I don't want to. Remembering things has a cost. Switching context has a cost. I have a limited brain budget and want to balance it between execution efficienty and solving the problem I'm working on.
I use the keyboars a lot, but I keep my mouse. Why ? Cognitive load, that's why. I can remember all the shortcuts for all the apps. But I don't want to. Remembering things has a cost. Switching context has a cost. I have a limited brain budget and want to balance it between execution efficienty and solving the problem I'm working on.