Other mistake: Vaughn was sleeping in the back seat of the van with his head leaning on Gina's shoulder. When the collision occurred, his body somehow straightened up and went head first between the front bucket seats, through the front windshield, and he was ejected/killed. Based on his sleeping position in the van, he should have rolled forward and been kept in the back seat by hitting the front seats. A sleeping person is also less likely to be injured/killed because the body doesn't stiffen preparing for impact. If the accident actually happened as portrayed in the movie, Vaughn's body should have had visible cuts and be covered in blood, not just have a small amount of blood coming out of the side of his mouth. (00:07:53)
Other mistake: After Emma gives Oak the guitar, and they sit on the step, the background changes and is noticeably a prop. The stairs up to the apartment are no longer real, but a vertical replica (and not a very good one). The position of Emma's scooter also changes from being parallel to the building to about a 45° slant and the handlebar no longer reaches the lights around the window. (00:12:55 - 00:13:19)
Other mistake: At the cemetery, Oak's grandfather told Gina that Valerie was "FIVE months pregnant with Oak" when the automobile accident occurred. A little later in the movie, Gina told Pedro that "Valerie was in the car, too, FOUR months pregnant with Oak." (Gina knew that Oak's birthday was four months after the accident and misspoke). (01:17:43 - 01:23:36)
Other mistake: Oak's last name is Scoggins, but the newspaper article about the fatal accident that his mother was reading on her laptop had "Skogens" in the headline. (00:15:29 - 01:15:24)
Other mistake: In the schoolyard scene where the bullies take Oak's notebook, a large mural-like backdrop (parrot, beach, ocean, and dolphins) changes location and is brought closer (becoming bigger and more obvious) at least two times. (00:16:00 - 00:17:10)
Other mistake: The toaster oven's timer rang and Oak opened the door and picked up two pieces of toast with his bare hands without showing the slightest hint that the toast or the toaster oven was hot. (The toast actually looked cold and hard). (00:11:15)
