arthur herman position you fellow at the hudson institute, the article discussed the fact that quantum computing could pose a security risk to the blockchain technology. my friend mr. perlmutter earlier asked mr. bankman-fried about this topic but i think it's worth revisiting and and i d open this question of to all of you and ask you to respond in writing. do any of you worry that in the future of quantum computing could be used to compromise the security of blockchain technology? and i see my time is expiring and i would just quit and yelled back, , madam chairwoman, thank you. >> thank you very much. the gentlewoman from pennsylvania, ms. dean, is now recognized for five minutes. >> i think the chairwoman and i think all of you for being here today and testifying before us. i want to start in a general way and i'm thinking, mr. brooks, of what you said about the practice of law, with the advent of emails i was a younger more event and remember all the fears around it. and so as has been said and this is a follow-up to what mr. green asked long ago, hours ago. it's obviously clearly