user124284: I mean if a large computer pool is used to attack a blockchain and modify the copy of the blockchain in 51% of computers in the network.
Then due to consensus, the faulty blockchain will be replicated across the whole network. Thus changing the whole blockchain.

user85: 
I mean if a large computer pool is used to attack a blockchain and modify the copy of the blockchain in 51% of computers in the network. Then due to consensus, the faulty blockchain will be replicated across the whole network. Thus changing the whole blockchain.

It won't work. Large computers are terrible at mining. It's like trying to use a jet plane to get billions of watermelons across a street. Sure, jet planes are big and powerful, but they're completely the wrong tool for that particular job.

124284: <p>I mean if a large computer pool is used to attack a blockchain and modify the copy of the blockchain in 51% of computers in the network.
Then due to consensus, the faulty blockchain will be replicated across the whole network. Thus changing the whole blockchain.</p>
 85: <blockquote>
<p>I mean if a large computer pool is used to attack a blockchain and modify the copy of the blockchain in 51% of computers in the network. Then due to consensus, the faulty blockchain will be replicated across the whole network. Thus changing the whole blockchain.</p>
</blockquote>
<p>It won't work. Large computers are <em>terrible</em> at mining. It's like trying to use a jet plane to get billions of watermelons across a street. Sure, jet planes are big and powerful, but they're completely the wrong tool for that particular job.</p>
