Funny thoughts

It's funny that you don't realise that some things exist, that people have spent time and energy on it and that people even have full time jobs working on it. Take traffic software; as long as everything goes well you don't really notice that someone must have thought out how to program the traffic lights at a big crossing, how long the lights should be red, orange and green and what lights should be red at the same time. Such things we seem to take for granted, but believe me, they don't go automatically. I like thinking about such things.