Why is the distinction between primary and secondary sources a basis for scientific work and how do you assess a quote from "Spiegelonline" as a scientific source in this context?

The essay explores the critical distinction between primary and secondary sources in scientific research, emphasizing its importance for maintaining quality and integrity. It evaluates how a quote from Spiegelonline is perceived as a scientific source and discusses the challenges associated with citing secondary sources. The paper highlights the potential risks these challenges pose to scientific work and examines the ethical implications of differentiating between source types, arguing for the necessity of this distinction in scholarly communication.