In the sixth wave, waste equals opportunity. If you can find waste in a system, the opportunities will follow, because in a world of limited resources waste is a huge source of untapped value. In a world where resource efficiency is a source of competitiveness, waste is a good place to look. Anything that reduces or eliminates waste is likely to do well. This might take the form of a technology that gets rid of waste by improving the efficiency of a system, but it might also be a technology that enables us to extract value directly from waste.