[My door is not fitted with a peephole either. Those without eyes or without limits to their knowledge have no need for peeping, and I am without either. I have never once peeped at or through something, and I doubt I ever will.

Apertures built into physical surfaces to reveal what's hidden behind them are for those with particular handicaps. They are for those lacking advanced vision to render the opaque permeable to light, or those lacking advanced knowledge to render the concealed information irrelevant, or both. They are for people who I call suckers.

I know the identity of anyone who stands behind this door, even in those cases where I have not extended an invitation to the visitor personally. Pardon me while I let Jack inside.]