> I was puzzled throughout why "a uniform experience" is something desirable. Because using a very consistent UI (e.g. everything on terminals) takes less cogn

> I was puzzled throughout why "a uniform experience" is something desirable. Because using a very consistent UI (e.g. everything on terminals) takes less cognitive load. It is known that having to continuously switch your vision between different fonts, font size, colors and other visual patters across different applications is more tiring. It's one of the reasons for having an extremely consistent style on aircraft dashboards and similar. I've noticed the difference myself many times when spending a long day on a bunch of uncluttered terminals VS a heterogeneous mix. Furthermore, using a mouse requires a continuous feedback loop between hand and eye to aim at buttons. You don't need that on a terminal. When doing "change management" ops in Amazon the first step was always to unclutter the desktop.