Do you consider yourself technologically knowledgeable? Well maybe you’re a modern-day wirehead, but how much do you know about the basics of modern technologies — engines, fluid dynamics, flight, etc.? Take this quiz and find out if you were stranded on a tropical island with six random associates if you would be the guy making radio transmitters out of coconuts and palm fronds or the guy who falls out of his hammock every night.

(I got 7 out of 10 correct, which earned me the qualification of “useful”. Hey, there has to be a first for everything, right?)

There are 195 countries in the world today. Spelling counts. I don’t think it’s possible to get anywhere near all of them unless you are an insanely fast typist and make no mistakes. The best I could manage was 80.