The chief difference from other product design philosophies is that user-centered design tries to optimize the product around how users can, want, or need to use the product so that users are not forced to change their behavior and expectations to accommodate the product. The users thus stand in the center of two concentric circles. The inner circle includes the context of the product, objectives of developing it and the environment it would run in. The outer circle involves more granular details of task detail, task organization, and task flow.