Originally Posted by
Consol
Quite right in general but do remember there are some passengers who think there is a hole in the wing when the flaps and spoilers are deployed.
A few false positives would be a small price to pay (see the above examples where keeping quiet turned out to be a very bad idea).
And no airline should be employing cabin crew who can't tell the difference between the flaps being extended and a punctured aerofoil.