Comment by bryanlarsen

The other thing that a TUI generally does that a GUI doesn't is that it lets you type ahead, you can drive it without looking at the screen.

Most GUI's make you wait for the form to appear before you can type into it. That totally destroys the flow of operators.

There are GUI's that are properly designed to be keyboard driven and to allow type-ahead. Those can be truly best-of-both-worlds. Too bad they're so rare.