[Cthulhu_]

Before Windows / GUIs, everything was a TUI. Some of those applications were kept around for a long time even when Windows was mainstream, because they were faster. If you've ever seen an employee (or co-worker) work in one of those applications you'll see it. They can zip through screens much quicker than someone doing point and click work.

[cube00]

It's truly an amazing sight, our payroll system was all text based screens. I had a question and the clerk ripped through like 10 screens to get the information I needed, we're talking 200ms human reaction speed through each screen.

I also worked with a mythical 10x developer and he knew all the Visual Studio keyboard shortcuts. It was just like watching that payroll clerk (well, almost, we had under-specced machines and Visual Studio got very slow and bloated post v2008), I don't think I ever saw him touch the mouse.