No HUD at all? Not even a backup system? Huh...wonder how that's going
to work out.

Just like in a jet with a regular HUD - if it fails, you just use your
backup (heads-down) instruments. No big deal (except for weapons
delivery, of course - then you have to use that piece of gum you keep
in your flightsuit for just this reason).

Better view out the window, too, without all that writing cluttering
up the view!

Of course, all those HUD babies out there will probably declare an
emergency and have to be led home...

Kirk