Say you were an alien who came to Earth and discovered the rules of baseball. Paper-clipped to those rules was Tom Tango's résumé and the "When To Intentionally Walk" tables. You'd have no reason to question those tables; you'd have no evidence or knowledge to contradict them. But we do have other relevant evidence: the collective actions of experts in the field. Big league managers clearly believed the Walk Bonds table was too conservative, because they continually walked Bonds in Do NOT Walk situations. For instance, Tango's chart finds almost no instance in which it was wise to walk Bonds with a runner on first and fewer than two outs, yet managers did so 23 times, including six in 2004 alone.