sense—the reason i put the laundry detergent in the laundry room with the washing machine is because it's convenient and makes sense. likewise, i put my clothes in my closet so that i can find them in the morning and get dressed.
that's exactly how object-oriented programming works, too. a class in object-oriented programming groups together information and instructions for what to do with the information. it's a place to store information of a particular kind, and a set of instructions for what to do with it. when you are creating classes, you have to decide what kind of information makes sense to be associated with what kind of tasks.
although objects 