Statement of what blockchain gives to humanity is not strong enough #52

In https://github.com/ProgrammingBlockchain/ProgrammingBlockchain/blob/master/bitcoin_transfer/blockchain.md explains the key benefit of bitcoin/blockchain by saying "For the first time in history we have a database which can’t easily be rewritten".

That sentence should actually read: "For the first time in history we have a database for which the entries are impossible to tamper with or rewrite"