3. enact a rule that all trades stand.. erroneous trades made by a computer algorithm will never get rolled back
THIS. It is total bullshit that if your computer fucks up massively you get a rollback. Keep your winnings if you win, get your money back if you lose. What a deal for the big firms.
If I'd known computer science was going to be like this, I'd never have given up being a rock 'n' roll star. -- G. Hirst