Can't is Illegal

I'm fairly certain in the six days that I've had my new crew that I've asked them to do things some of them weren't quite on board with.  The thing is, I'm not going to stop nudging.  We've got nine more months of nudges to experience.  Well, just in case anyone ever thinks of verbally backing out, we made a little poster for our room this week.
    

My inspiration was the version below that I found on Pinterest.  Click on the picture to visit its owner. 

So sure there are non-verbal ways of saying "can't" but my hope is that the reminder on our wall sends the message that at least speaking the word is illegal.