mr. peterffy? >> we see that happening all the time. but i do not believe that that should be such a great concern. i mean, it is bad but we have much, much more situations to do with with at this time. i'm suggesting here that each broker keep on record the identity of a person associate with each order, so if there's any order, that is the discretion of all it can be very easy collected either regulators from the different exchanges and correlate your submitter by name. >> let me call professor angel before i go back to that point. do you have a comment on my last question, about whether or not you believe that the manipulative same day trading between platforms exist? >> well, there are two types of manipulation. there's the old fashion manipulation by order ignition where you dump a big sell order in the market, try to push the price down to scare other people, and trigger all the stockholders. that doesn't really depend on the platform. and, indeed, a lot of traders don't pay any attention to the platform. you know, they just send