One of Krsna's names is Acyuta, the one who is infallible. Srila Prabhupada gave one explanation in the Krsna book of this name of Krsna, Acyuta, and he said, Krsna is known as Acyuta, the infallible one, because He never fails to notice the smallest service that has been offered...
(Kadamba Kanana Swami, 14 Feb 2010, Chowpatty)
