While upstreaming is incredibly important for long-term support it isn't nearly as exciting as the reverse engineering work the people mentioned were responsible for
30 karma · joined November 20, 2015
This machine also allows you to send these wrapped dollars to other people - it just subtracts from your balance and adds to the other person's.
What this guy did is transferring his wrapped dollars to an address no one controls instead of withdrawing as he should. This address was the machine's address, but it's not programmed to handle the balance in it's own account and it runs code that can't be upgraded, so any values sent there are lost.
In this example dollar = ETH, wrapped dollar = WETH, machine = the WETH smart contract.
The real problem here was thinking a ETH transfer (dollar bill deposit in the example) works the same as a WETH transfer (database transaction in the example).
Say what??