Using Todd's definition of predictability above:

"Predictability means you before you perform an action, you can
assert with a good degree of accuracy what will happen next."

I'm wondering how the following scenario stands against the notion
that usability = predictability.

Consider the scenario where a user cannot determine what action to
take to initiate a task/process.

Is the user really predicting anything at this point?

Would you argue that the user has made a prediction as to the fact
that they need to perform some action to initiate the process? And
that since they cannot validate their prediction by identifying the
action to take within the interface the argument predictability =
usability holds?


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Posted from the new ixda.org
http://www.ixda.org/discuss?post=29451


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