Sustainable, economic growth (earning potential) can be in doing the same or even considerably more with a lot less — less precious materials, energy and space. I bet you that good examples can be found in each and every sector and industry. Microelectronics are always mentioned in this respect. We can now solve stuff by using a laptop where 25 years ago a bulky, kW-sucking desktop computer was needed. Vertical farming and small-footprint vehicles to cater to our personal mobility needs are also great examples. Anyone who makes a profession from helping another in doing more with less, not only helps that other person to save money, but he/she will make money himself/herself.