[applause] >> so now as i step toward the future, professor stephen teret is the founding director of johns hopkins center who has been one of the pioneer in thinking about gun violence from a public health perspective, and as inspired mentored many of us will now talk to us about the promise of personalized guns. [applause] >> i don't know if -- adam is in the room. adam, raise your hand. i would like to -- stand up so everyone can appreciate you. he's tall. [applause] so i'd like to express my grad gratitude for being a coauthor on the paper with me, adam an jurnt graduate at johns hopkins university. he's a senior public health major, and is as an example of the future of gun violence prevention in this gun. thank you, adam. i was going to have as my talk a lot of data, and i would describe to you the sophisticated statistical annals i would do the data, i worried that i would confuse daniel, so -- [laughter] instead -- yeah. so instead let me tell you a quick story. the story occurred thirty years ago, exactly thirty years ago on what was then a cold wintery preglobal warming day,