Renowned usability expert Jakob Nielsen has taken a look at Windows 8 and did not like what he saw.
He invited 12 experienced PC users to have hands-on with Windows 8 PCs and Surface tablets and found them fumbling around the OS all too often.
Jakob complained of increased cognitive load due to the Metro and desktop interface, memory overload due to full-screen apps, less discoverability due to flat UI elements and hidden charms, low information density, error prone gestures, and poor suitability for desktop use.
It is however striking that much of the issues were due to unfamiliarity with the OS, with users for example not able to activate the task switching gesture or not knowing were menu settings are.
I suspect experienced Windows 7 users will be equally flummoxed when confronted by the Mac user interface, and that much of the issues will become non-issues with time.
Read the full study at Useit.com here.