You might think pressing start/stop would
pause cooking, and allow you to resume it.
One analogue you might be drawing on for this is a car speaker
system: pressing the volume dial in a car often starts and
stops the noise. You can be playing a song, then push the dial
to kill it. If you press it again, the system turns back on
and resumes where it left off.
If you press start/stop on the Ninja
airfryer, the whole thing not only turns off but resets -
cooking mode, temperature and time left on the clock are all
cleared.
This can be quite frustrating and, even for experienced
airfryer users, it's more tempting to press
start/stop than you might think - for
example, it's quite instinctual to press it as a way of
"confirming" a time or temperature change mid cook - but this
will instead stop the whole program.
Again we can see a flaw with the "programmable" approach. The
airfryer encourages us not to set a timer of our own as it
provides it's own timing method - but that timer's unfamiliar
UX makes it very easy to delete unintentionally.