The third module of the course, titled "Design for X," will introduce you to the various considerations that should be taken into account when designing a product, including sustainability, manufacturing, and other factors. This module will cover design methods and workflows that can be used to create products that are both functional and aesthetically pleasing. By the end of this module, you will have gained an understanding of how to design for sustainability, how to optimize designs for manufacturing, and how to create products that meet the needs of a variety of different users.