How does observation limit the what scientist can study?

Observation limits what scientists can study by confining their focus to phenomena that can be directly perceived or measured. Many aspects of the natural world, such as subatomic particles or certain theoretical constructs, may be beyond current observational capabilities. Additionally, reliance on observation can introduce biases, as scientists may prioritize observable data over theoretical or conceptual frameworks that could yield valuable insights. Consequently, this can restrict the development of a more comprehensive understanding of complex systems.