What concept suggests that dividing science into a sharp 'hard' or 'soft' binary is inaccurate?

Answer

The existence of a continuum where disciplines share varying degrees of mathematical dependence and control complexity.

Many modern scientific thinkers caution against the rigid separation of sciences into hard and soft categories. Instead of a sharp division, the structure is better conceptualized as a continuum. On this spectrum, disciplines exist based on a gradient of characteristics, including the extent of mathematical reliance, the degree of experimental control achievable, and the intrinsic complexity of the subject matter being studied. A field's placement shifts based on which of these factors is most dominant in its daily methodology.

What concept suggests that dividing science into a sharp 'hard' or 'soft' binary is inaccurate?
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