Continuity mistake: When we see the shop worker walking through the Hi-Lo Mart, most of the shots are flipped. Pay attention to the price tags and in particular the name tag on the shop worker, plus the items she has gathered swap from her left arm to her right. (00:03:20)
Continuity mistake: When Walt gets home, Skyler puts her bag on the sofa and is browsing in the bag with her right arm. Camera cuts and now she's using her left arm. (00:42:10)
Continuity mistake: When Jr. is walking out of Hollie's room with the freshly printed posters, the box is on the floor with the flap open by the leg of the table. When we see Jr. leaving from the box's POV, the box has rotated and the table leg can no longer be seen by the flap of the box. (00:14:20)
Continuity mistake: At the end, Skyler is applying lotion to her arm and her arm is upright. Camera changes and now it's horizontal. (00:42:50)
Visible crew/equipment: Just as Hank gets given his present at the office, several T marks are visible on the floor. (00:39:10)
Continuity mistake: When the woman is collecting the clothing at the Hi-Lo Mart, the position of the shoes she is carrying changes between shots. In the first shot the toes of the shoe are pointed at the ground, In the second they are aimed up over her shoulder. (00:03:00)
Cancer Man - S1-E4
Continuity mistake: As Walter is telling the story of how he met his wife with the crossword puzzles, there is a cut between two shots when he's saying eventually "I caught her looking over at me." He's first looking straight ahead across the table at his brother in law, but after the cut he's suddenly glancing over towards his wife. (00:05:30)
Crawl Space - S4-E11
Continuity mistake: Ted is in his house with Saul Goodman's men. When he beats his head on the furniture after he stumbled on the carpet in attempt to escape and passes out, his legs change position in two different angles shots.
Continuity mistake: When Walter takes Junior home from school, at first there are no shadows or sun hitting the ground in front of the garage. In the next shot the sun appears.
Box Cutter - S4-E1
Continuity mistake: When Gus starts to walk away from where he killed Victor, he drops the Box Cutter, and we see it landing. However, after a cut to the next shot, its position has changed. It is no longer sitting on the line in the floor, and it is pointing 180° in the other direction. We can also see from Walt's shadow that the Box Cutter has moved quite a bit further away from Walt. (00:35:05)
Crawl Space - S4-E11
Visible crew/equipment: A camera in a black protective box is visible on the ground in the intersection during the crash sequence when Walt gets T-boned by an SUV. (00:24:48)
Visible crew/equipment: In the scene after Walter took his son from the school and parks his car in front of their house (before the pizza scene), you can see the camera mounted on a crane while filming the scene reflected on the car's windscreen.
Continuity mistake: When Walt is practicing his pistol draw in his apartment, he drags over a chair in which to sit during his practice. When he is dragging it, he aligns it directly against the carpet. However, a few seconds later, another shot shows that the chair is now inches away from the carpet, despite him never adjusting the chair.
Chosen answer: It is part of the ritual for la Santa Muerte. It is a sign of humility and sacrifice.
djm