When a scientist researches the work of others, it is an example of literature review.

Here's why:

* Literature review is a systematic and critical evaluation of existing research on a particular topic. Scientists engage in this process to:

* Gain a thorough understanding of the current state of knowledge in their field.

* Identify gaps in research that need further investigation.

* Establish a foundation for their own research by building upon previous findings.

* Avoid unnecessary repetition of existing research.

Let me know if you'd like more information on literature reviews!