At March 2013 a bug in Bitcoin 0.7 caused a hard fork of the chain that could not be automatically resolved (details :
https://en.bitcoin.it/wiki/BIP_50).
This event didn't seem to affect bitcoin price and public image of bitcoin.
Now the situation is different. Bitcoin price has increased 30x times since March and now bitcoin is receiving more public attention than ever before.
I wonder what would have happened to bitcoin price if a hard fork had occurred now?