To determine the current "hot" areas of physics using databases like Scopus, it is essential to clarify what "hot" and "still in development" mean. "Hot" refers to trending fields with significant research activity, while "still in development" indicates areas that are emerging or evolving. The identification of important fields can depend on various factors, including the number of researchers, the volume of published articles, and funding opportunities from prestigious institutions. For insights into what physicists find exciting, resources like the American Physical Society's highlighted research can be useful. The discussion emphasizes that the perceived heat of a field can vary based on the granularity of the subfields, illustrating that broader categories may appear more active than their specific subfields.