This document discusses the concept of progression across multiple topics: - Generational progression is seen through changes in music preferences between younger and older generations and how this can cause communication gaps. - Individual progression is shown as people's regrets deepen and change as they age from their late teens to their 70s. - Technological progression is represented by new inventions like a salad-tossing robot and advances in virtual reality gaming. - Social progression includes how language evolves with younger generations and neuroscientific concepts become easier to understand at different stages of life. The overall message is that design must progress along with changes in technology, society, and across generations.