Prior to their study and they were looking for those quality companies that were good companies but then at about 15 years back they started to grow and they continue to grow while. Other good companies stayed the same they then went in and researched the financials they talk to middle management to upper management to people on the line looking for the common. Threads that separated those companies that were good but went to great from those that just a good they came to discover that the number one obstacle to becoming great. Was if you were already good in that amazing and there were many other common denominators that they found that they found that one of the common denominators for these. Companies were that they had a BHAG that's a big hairy audacious goals a BHAG is healthy for us humans to stretch it's healthy for us to have goals that make us push the edge if you will probably.