We're talking a lot about different types of cryptography and which types will survive quantum-computers and beyond that, superintelligence. Let me explain why Hash Based Cryptography is safest against superintelligence: All other forms of cryptography *imply* secure hash functions. - Factoring is hard? Great - you get secure hash functions! - Lattice problems hard? Yahoo! You have hash functions! - Decoding hard? Another hash function! AND EVEN IF ALL THESE MATHEMATICAL SYSTEMS GET BROKEN, YOU COULD STILL HAVE SAFE HASH FUNCTIONS. In case of Tsunami, 1,000 foot peak is safer than on a 10 foot hill.