I was mainly thinking about the economics (nobody fully understand economics -- in fact predicting economic outcome is rare enough as to be celebrated in the ec

I was mainly thinking about the economics (nobody fully understand economics -- in fact predicting economic outcome is rare enough as to be celebrated in the economic world). But again, nobody fully understands crypto either: crypto algorithms such as RSA are considered secure because no effective attacks as been found against them despite many people trying, not because of some intrinsic properties or formal proofs.