AI artificial intelligence and the X I is the Greek letter X I which are used for solo manav's distribution for quite stupid reasons which I'm not willing to repeat here in front of camera so it just happened to be more less arbitrary I chose this I but it also has nice other interpretations so their actions and perceptions in this model around an agent has actions and perceptions and overtime so this is a Index IX index I so this action at time I and then followed by reception at time I will go with that I lit out the first part yes