How Much is That Baby in the Window?

This has been a pet peeve of mine for a long time...people knocking on the window of the nursery when they are looking at a new baby. After 6 years of putting up with it I thought I'd speak my mind. People seem to think that a baby will look at them or enjoy hearing the constant knocking on the window or think the baby can actually acknowledge that they are being waved at. Seriously people, it's annoying! The baby is sleeping soundly then "bam bam bam" they're scared out of their mind and screaming and people outside are taking pictures and saying "Ahh, look, the baby is crying." Uh, big suprise...you just scared the poo out of them. Now I understand why pet stores have the signs up that say "please do not tap on glass". Those poor puppies are probably exhausted by the end of the day from that constant noise of window knocking. Here's a tip: babies don't like it and neither do their nurses. So for pete's sake...stop banging on the window!