Invisibility

[canadaump6]

"We are taught that a good blue is an invisible blue,".

I believe this statement is true to a point. When we walk onto the field, it is best to do so as quickly as possible, and to not do anything that will attract peoples' attention. When calling the game we should try to be unnoticed, but this cannot always happen. Now and then there will be a tough rule to apply, or one that the people involved are not familiar with. In this case we have to sacrifice invisibility for getting the call right.