One does not joke with those who have accounts to settle.
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Give pointers to the student who asks oneself questions, but delay before answering to the thoughtless questions. That way the student will rely on their judgment.
In the making
One supplies as needed.
Proof (Pivot's method)
When someone is welcoming and a patient teacher, they are trusted.
One shows the students the limits which must not be exceeded, then one must trust them.