developed is that you can say pretty confidently, probably in 90 days you will be able to develop something, it's really like a cold. it's no longer this process of trial and error. do you think that this is the future, where we're going to get more variants probably and you're just going to have to keep seeing whether you need to adjust the code? >> yes, i think the past ten years of developing the platform, several billion dollars has gone into doing this, enables us using computational approaches and all of the learning we made in mrna, take the code, test it and see if we can get the antibodies needed for maximum protection. we should keep in mind our job is to develop the maximum protection for most people safely. and we have a new tool in the vaccine arsenal that allows us to operate at speeds to match what a virus can do. previously we were several years