I though I would tantalise you a little by setting you a small logic puzzle in my blog. This puzzle is aimed at all the engineers and scientists out there but I guess anyone who prides themselves on some clear logical thought processes should be in with a shout too. Anyway here goes…

“You have a house with a room illuminated by a single light bulb. The light bulb can be turned on and off at any one of three light switches, independent of the positions of the other two switches. What is the electrical circuit diagram for the switches and light bulb?”

I hope that’s clear enough. It’s pretty simple to work out really, once you key into the right thinking tools. I’ll let this one run for a couple of weeks and see how you get on. If you like it, I’ve got more where this came from. If you don’t like it, we’ll brush it under the carpet and forget it ever happened.