The document discusses various topics related to managing products and services over their lifecycles, including: 1) Common reasons products may resist change or fail include cultural/image barriers, psychological barriers, risk barriers, lack of incentive to change, incompatibility with habits, and lack of usage barriers. 2) When managing a product's lifecycle, companies can modify the product, modify the market, or reposition the product. Products may be repositioned in reaction to competitors, catching trends, or reaching new markets. 3) Services have characteristics of inseparability, variability, intangibility, and perishability that products do not. Their quality can be inconsistent due to variable human delivery and they cannot be