What are three major criticisms of political science as a discipline?

As someone interested in the academic realm, I'm curious to understand the criticisms levied against political science as a discipline. Could you elaborate on three of the most prominent criticisms? Are these criticisms rooted in the methodology employed, the relevance of the subject matter, or perhaps something else entirely? I'm eager to gain a deeper understanding of the challenges and limitations faced by political scientists in their pursuit of knowledge.