I bet Harry Beck wouldn't have known what a user interface was, but that's really what he designed and he really took that challenge and broke it down to three principles that I think can be applied in nearly any design problem.
Kertu, kad Harry Beck nežinojo,  kas yra vartotojo sąsaja, bet būtent tai jis ir sukūrė, ir jis sunkią problemą  išdalino į tris principus, kurie gali būti pritaikyti beveik kiekvienai dizaino problemai.