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5C - Pepper maintains standards in order to be predictable.
Use and keep common standards.
On the tablet, order the navigation to go forward to the right, and
go backward to the left.
Apart from conversations, a user action will always have the
same response from Pepper.
5D - Pepper protects users from mistakes.
Always ask for a user confirmation before important actions.
Simple questions are more ecient than long and complex ones.
Avoid open-ended questions.
Rhetorical questions lead to an interaction failure.
Define a step-by-step flow for complex tasks and ask only one
user action at each step.
The most dangerous actions have to be the least accessible.
5E - Pepper helps users when they have diculties.
Inform users when an error occurs, state what went wrong, and
how the user can fix it.
When Pepper is unable to understand a user's answer, Pepper
always oers a solution.
Allow users to cancel or edit what they just did.
05 | Pepper is easy to use
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