[kerkeslager]

> Regarding the other comments: "if you somehow manage to write it correctly, the DAO might reverse your code by hard forking" and "the only solution they have is to break every contract in the system except the one large enough to perform a 51% attack on the blockchain."

> In one sentence it sounds like you're saying the DAO contract somehow reverses 3rd party correct code, and in the other that every contract gets broken (?) except one contract because it's large? and the contract (?) performs a 51% attack on the blockchain (?)

Yes. When the DAO broke, the Ethereum community banded together and performed a 51% attack on the Ethereum block chain, potentially breaking every other contract in the entire system, even correctly coded ones.

[heliumcraft]

Calling it an attack is a bit weird. Attacks are typically meant to things like create double spends. An hard fork is the natural mechanism for a blockchain to update. The Homestead release for example was an update that was done through an HF, the next update Metropolis will also be done through a HF.

For the DAO HF: The DAO contract was replaced by a withdrawal one, that was the only change, No other contract broke because of the fork.