Balls and Strikes

Andrew Pincus at TPM reports on an exchange with Ms. Kagan on the famous Roberts definition of a judge's role: call balls and strikes.  I'm disappointed she didn't go further with the metaphor.  Anyone who grew up when I did was told the strike zone was between the knees and the armpits, and over the plate.  Anyone who watches baseball on TV today knows that's not the way umpires see it today.  And there's no consistency from umpire to umpire.  The best the pitcher and the batters can hope for is consistency through the day.