angry tapir writes: "Samsung Electronics has developed see-through flat-panel screens intended to be used as high-tech windows. They could overlay news or the time on office windows, or flash special offers on store windows while still allowing shoppers to see inside. Samsung showed the concept screens at Japan's FPD International exhibition."
A method of solution is perfect if we can forsee from the start,
and even prove, that following that method we shall attain our aim.