Always wondered.............
In a lot of pictures, movies, and so on showing London during ww2, there are windows criss-crossed with masking tape*. Can anybody tell me why? If it's to guard against being cut up by shards of glass it's probably doimg an excellent job, but if you're buried under a layer or two of rubble the advantages seem kind of academic.
* masking tape, sticky tape or whatever the British refer to it as.