Those of us of a certain age will be able to uncomfortably think back in retro-terror to a time when life was so wildly dangerous that we would have to answer the phone without knowing who was on the other end of the line.
I know, I know, I can feel the anxiety rising up the spines of the post-landline generation as I type. And the same can be largely said of answering the door – unless you had a handy window to check through or even a peephole built into that very door itself, you could be opening yourself up to absolutely anyone, from a whey-faced goon intent on robbery, a Jehovah’s Witness intent on conversion, or, worse even still zombie apocalypse politicians begging both your approval and brains.
