Adrian Scrase, independent consultant at EA Consult Services, has been deeply involved in the evolution of wireless standards throughout many Gs at ETSI and, as you may expect, is now working on the evolution to 6G. What can we learn from 3G, 4G and 5G, to avoid the mistakes of the past? How can we find a sustainable innovation trajectory that is grounded in realistic expectations for what new technology can deliver, how much operators can invest, and how much subscribers are willing to pay? Will we be able to avoid the inflated expectations that plagued 5G?