Is saying nothing an option now? It is an option but, more to the point, is it the right one? You might believe information that has come to light recently can put you in a stronger position in some way and, through simply keeping what you have discovered to yourself, you can retain the upper hand in a situation. The sky implies you can benefit in the short term by saying nothing. It implies even more strongly that a longer term benefit can come from disclosing what you know.