How might it be argued that the borderlines between philosophy and all other disciplines may often be very blurred?

The boundaries between philosophy and other disciplines can be blurred because philosophy often addresses fundamental questions that underlie every field, such as the nature of knowledge, reality, and ethics. Many disciplines, like psychology, Biology, and physics, draw on philosophical principles in their theorizing and methodologies. Additionally, interdisciplinary studies have emerged that combine philosophical inquiries with insights from specific fields, further muddying the distinctions between disciplines.