and we're back with tina kandel former facebook director of lunches aisha next president of contrasts and c.e.o. of mom and app team so tell me so that we know what are the most sophisticated tills stat keep users on the hill i mean are engineers in a big tech consciously using your scientific knowledge to keep us in gauged no i i i mean i think part of what is scary is that there really are cumin beings on the other side of the of of these services right it's really an algorithm that's not very well in my opinion not very well supervised that is being given an instruction which is make him spend more time on the service tomorrow you have this universe of billions of pieces of content he's got a couple 100 friends they're publishing content let's figure out what to put in front of him that's going to get him sucked in and we also have push notifications and we can play with the time of day that we send those push notifications to him and if things get really bad we have his phone number so we can text message him in what really bad i mean he hasn't come back for a few days when i go o