Before revision: 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.
After revision: The chief difference from other product design philosophies is that user-centered design tries to optimize it 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.