One answers to one's opponents by using the same language as them.
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Going to see and be seen.
In the making
One needs to abandon their affairs and make oneself available to patiently soften one's most embarrassing flaws, so that one can inspire confidence and be engaged by those who can help them.
Proof (Pivot's method)
One explains to others what they already know.
One calculates precisely the numbers that will have to be provided.