Erhereum is still in experimental stage for all those new to it. There will be 4 stages in total with the final stage Serenity, which will transition Ethereum from POW (Proof of Work) to POS (Proof of Stake) mining. Bitcoin had a hard fork in 2010 when billions of Billions were sent an address and now with the DAO Ethereum miners will have to vote with their hashing power whether to hard fork or not to give all DAO token holders back there coins. In this case I would suspect they will vote to refund b/c its possible with such large amounts of funds at stake here the SEC (or government agency) goes after the Crurators of the DAO.