Final answer:
Being fixated on a design makes thinking outside the box difficult since it limits creativity and divergent thinking, which are key to generating innovative solutions.
Step-by-step explanation:
It is true that when fixated on a design, thinking outside the box is difficult. Being fixated can lead to a narrow focus, which constrains creativity and the generation of novel solutions. Engaging in divergent thinking is essential to explore the widest variety of ideas and solutions for a design problem, as it allows for thinking outside the norm and approaching the problem from different angles. Moreover, brainstorming alternative solutions without immediate limitations can lead to innovative designs that meet customer needs more successfully, even if they require combining the characteristics of different ideas or making modifications to meet constraints.