I think the real lesson is that under enough pressure every large system leaks. Anything that gatekeeps millions of real dollars (search engines, stock markets,

I think the real lesson is that under enough pressure every large system leaks. Anything that gatekeeps millions of real dollars (search engines, stock markets, Amazon reviews, insurance claims, etc) will constantly be exploited and patched by nature of the thing. Only "solution" is to decrease pressure, by say fragmenting market into 20+ search engines, so that SEO people can't realistically optimize for all of them at once. Some smaller scope things can be made completely watertight, for example mathematically proven cryptography, but even that often leaks to government pressure.