The Reluctantness to Sell Berkshire

23% is as an historical figure that has no predictive value the unwillingness to sell businesses like I say goes back a long way. We don't want to enter into any implicit contract with our fellow shareholders that will cause us to have to behave in a way that we really do not want to behave. If that's the price of making more money it's a price we don't wants to pay there's other things other things we forgo also but that is the one that people might disagree with us on.