Nasty-looking rain around noon today, so I waited until it seemed to have stopped before venturing out to Tesco for my lunch. I was right, as it turned out, and the umbrella I'd brought with me was more than adequate to protect me from the last remnants of a light drizzle.

It didn't, however, protect me from a white van driving through a puddle at me with perfect aim and timing. Bah. Umbrellas are clearly inadequate; I want a semi-permeable personal force field which lets in air but not liquid water.