On Wed, Oct 21, 2015 at 12:46 PM, I wrote:
... every other human interest guideline.

Sorry, "Interface". Human interest guidelines lead to the horror of Daily Mail Online :-)

If Quiet and Neutral aren't sufficient Shahyar prototyped at least two more excellent ideas (I can't find the link right now...)
http://area51.yar.gs/wmf/flow1/  To repeat, a page would only use a subset of these at any one time, ignore the overstuffed appearance.

On Wed, Oct 21, 2015 at 1:20 PM, Isarra Yos <zhorishna@gmail.com> wrote:
On 21/10/15 19:46, S Page wrote:
Users not understanding the design is no argument for consolidation, I bet users get an 'D' at best on Material and every other human interest guideline.

If users aren't the ones we are designing for, then who is?

Obviously design is for users. But having a pleasant productive time using a design and understanding its nuances are very different things.  "Testing with your users to see if they understand the difference between [two button colors]" seems crazy (unless I misunderstand what designers mean by "understand"). Does Google test to see if users understand the difference between the rounded edge and the shadowed edge in Material? I really doubt it. Different colors and treatments provide different experiences, and there are guidelines when to use them.
 
Wasn't the whole point of the colours is to call the users' attention to them, and the point of differentiating is to tell the users that these are different things?
Sort of, and yes.

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=S Page  WMF Tech writer