..because they've reached the conclusion and just waiting for you to do the same.
The value of knowledge is being cleverly subverted. While knowledge is put on a pedestal, the sweet talkers and smooth operators are glorified more. The choice is not always between speaking out even when unsure versus keeping quiet and letting others convince everyone else that the water is nicer over the cliff. It's also choosing when to impart knowledge at it's most useful point in time: when people are ready to accept it.
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