The related idea, advanced by our very own Lt. Gov. of all people, that Palin is too fragile seems especially silly.If there is one thing that, to this point anyway, ought not be doubted, it is Palin's demonstrable toughness:She assured them she would not take much time off: she had returned to work the day after giving birth to Piper. ???To any critics who say a woman can???t think and work and