There was a failure to recognize the deep problems in AI for instance, those captured in Blocks World. The people building physical robots learned nothing. – Marvin Minsky
To love means loving the unlovable. To forgive means pardoning the unpardonable. Faith means believing the unbelievable. Hope means hoping when everything seems hopeless. – Gilbert K. Chesterton
Most success springs from an obstacle or failure. I became a cartoonist largely because I failed in my goal of becoming a successful executive. – Scott Adams