One optimistic and still very-non-consensus belief I have about the far future of cryptography:
I think that there is a 33% chance that, for average real-world computation, there exist ways to implement all three of what I call the Egyptian God Protocols (SNARK, FHE, iO) with 1+ε factor overhead (meaning, for large enough instances, the added overhead of cryptographizing a computation becomes arbitrarily small compared to the base cost of doing the computation itself)
And a 60% chance that all three can be done with single-digit overhead (ie. <10x, measured in total cost of energy plus amortized compute)
I think there's a good chance we'll get one of these (probably SNARKs with single-digit overhead) by the end of this decade. After all, we're already there for specialized hash functions and for some LLM inference.
There's nothing else in the digital currency space like the cryptographic technique underlying #Zcash. It's a moonshot: risky, but certain to change everything if it succeeds. https://t.co/jLLotqLevB