Jury instructions not objected to become the law of the case. Gutierrez v. Albertsons, Inc., 113 N.M. 256, 259 n. 1, 824 P.2d 1058, 1061 n. 1 (Ct.App. 1991). Consequently, we hold that Defendant failed to preserve the argument it now makes on appeal.
The allowable time to discover and to remove a dangerous condition or to warn of the dangerous condition depends on the circumstances of each case. Gutierrez v. Albertsons, Inc., 1991-NMCA-135, ¶ 34, 113 N.M. 256. Premises liability, however, cannot "be presumed from the fact that an injury occurred" or from "the mere presence of a slick or slippery spot on a floor...." Id. at ¶ 16; Williamson v. Piggly Wiggly Shop Rite Foods, Inc., 1969-NMCA-088, ¶ 3, 80 N.M. 591.