■
As we know, There are known knowns. There are things we know we know. We also know There are known unknowns. That is to say We know there are some things We do not know. But there are also unknown unknowns, The ones we don't know We don't know. 木村守秀さんのサイト http://www60.tok2.com/home/pbsl/p-playlists-top.htm お気楽版「ウィークエンド・サンシャインを聴く」 http://homepage3.nifty.com/mylittlevillage/mws.htm