Pine nuts are served by the handful and it's literally impossible to check everyone so a bad tasting pine nut can ruin a whole mouthful. A pineapple is different. You pick it up and smell it and if you don't like it you can simply choose another pineapple. If you are selling pineapples the goal is to make your pineapples the best that there is. If you are selling pine nuts the goal is to get a uniform size and shape and eliminate all defects. Pineapples are about looking and smelling great and appealing to the individual. Pineapple buyers get to choose! The pine nut producers needs to focus on statistical - and data-driven processes like Six Sigma to limit mistakes or defects.