When asymmetric cryptography becomes symmetric

This is just one example of why I like the cryptographic conservatism that I tend to find in Bitcoin, such as the habit of not disclosing public keys until time of use, and the habit of only using them once. I would not be surprised if quantum computers throw similar surprises our way.

(I wish Ethereum's new Casper PoS algorithm was similarly conservative.)

https://arstechnica.com/information-technology/2017/11/flaw-crippling-millions-of-crypto-keys-is-worse-than-first-disclosed/