The phrase "different stages" refers to various levels or phases in a process, where each stage represents a distinct point or progression. These stages can be sequential, overlapping, or independent and may involve different activities, requirements, or outcomes. The term is often used to describe the development of something over time, with each stage building upon the previous one until completion. It can also refer to multiple aspects of a project or situation that are at different points in their evolution, requiring attention and management to ensure successful progress towards the desired outcome.