A note regarding implicitness

This was written in a completely different context, but I think it holds a universal relevance -

During the cold war, US devised a mid size naval missile that, if unsuccessful in exploding when it hit the target, quickly had its outer shell dissolved in the water and the inner stuff all disintegrated, so that no one shall be able to prove that they ever launched it. Implicitness is like that missile, just that its more dangerous. You can use it to mean anything, and then you can later
easily prove it meant nothing.

So as a matter of policy; in matters of little significance, accept implicit gestures. But in matters of significant interest, be EXPLICIT.