[rjohnk]

I work with people who have TBI (Traumatic Brain Injuries) on a daily basis. Many have cognitive issues with short or long term memory.

We use iPads during "Tech days". On iPads that we have updated to iOS7, people that normally have no problem are having a heck of a time with the new UI, where things are, new actions with swiping, buttons, fonts, ect. It's not as, dare I day, intuitive. Even using more outlines on the new blue buttons (like in the App store) would make it better

Yes, most will relearn it, but it will take months for some. Great UI, Flat UI, doesn't have to mean less intuitive (borders around buttons, ect).

So we are sticking with iOS 6 on most of them.

[epo]

"Intuitive" is the great misused word of our industry.

The only intuitive things in human experience are fear of heights and the location of your mother's milk (I'm probably quoting but can't remember who). What people call intuitive is merely the familiar, all else is learnt.

IOS7 requires relearning, as you have confirmed.