[IxDA Discuss] Most usable doesn't always mean best solution

[Elizabeth Buie]

Todd wrote:

> On Mar 3, 2008, at 5:26 PM, Elizabeth Buie wrote:
>> No, the automatic would come out as the most learnable

> Well, this is one very key factor in determining usability.

Yes, of course.  But it does not constitute usability by its own self; there 
are other factors.

Remember that usability does not exist in a vacuum; it depends on who is using 
the product and in what context.  I worked for a couple of years on an air 
traffic control system, and "most learnable" in that context would definitely 
NOT have been "most usable" because it would have slowed them down in operation 
and could have made the skies much less safe.

Elizabeth