Because of a typographical error, a portion of one sentence was omitted from a letter to the editor from Sy Steinberg published yesterday. The sentence should have read: "This naive observation is illusory because the decision makers (those that oversee evaluation and decide what 'systems' are to be procured and fielded for use) mostly make their decisions based upon hardware reliability while omitting consideration of human performance reliability (HPR)simply because its realistic value is evasive."

The Sun regrets the errors.