The cycles are very similar in that they both stress thinking about the product from the user's perspective, and basing the entire cycle upon this relationship. The cycles are structured a little differently; the Lewis & Rieman cycle wants the designer to create a rough design of the product, think about the design from the user's standpoint, then create a mock up, whereas the cycle described in class can jump right into the mock up after the designers understand the user's needs. The cycle from lecture doesn't say anything about iterations, which the L&R cycle does before the design is even completed. The L&R cycle talks about the life of the product after the design is completed, such as the designers keeping track of their product, and making changes toit as time goes on, while the cycle from class does not.
