development I mean this is no transformation you are trying to move your team also from all these new technologies and you have a bunch of experts on all technology and their juniors in new technology and sometimes when you have deadlines the decision will be you we can do it in 30 minutes in all technology or in 3 hours in new technology invest in new first time it will be three hours next time it will be two and a half I mean no one no one no one learns King in 30 minutes so you need experience you don't want to go