During the flashback scene in the empty house, Debra takes a doughnut from the table and later tosses it to Ray while they are sitting on the stairs. Ray lays the doughnut on the third stair step and walks away. In the next shot of the stairs, the doughnut has moved to the second step.
During the flashback, Ray draws on a map of Long Island to indicate where his parents live and draws concentric circles around it to indicate where not to live. Ray draws the dot near Huntington NY. However, the family lives in Lynbrook NY, about 25-30 miles west of Huntington.