Thanks for this. A lot of them are very interesting. The one where each block has a billion people was informative. The one that shows just how many countries drive on the wrong side of the road was appalling. The one showing countries Britain hasn't invaded will make my relationships with my brother-in-law's Uzbekistani girlfriend, a couple of Mongolian and Swedish friends, and pretty much no-one else a bit less fraught. The one showing which countries don't use metric was interesting. I honestly didn't notice them not using it when I went to Burma. But I think it's important to understand that in Britain, people do still often think in pounds, and in Britain and Australia, most people would describe someone's height in feet and inches. The highest-paid public employees one is horrifying.
