The chapter is an attempt to dispel impressions that conceptual difficulties regarding the randomness are not given attention. Let us try to articulate the weaknesses and problems of the classical approach to mixing rules. Also the question is addressed between which limits the effective properties of heterogeneous media can vary if the case is really so that we cannot predict an exact macroscopic permittivity for a mixture.

Inspec keywords: mixing; permittivity

Other keywords: randomness; macroscopic permittivity; heterogeneous media; mixing rules; classical mixing

Subjects: Dielectric permittivity