Introduction

Abstract

How do classical properties emerge within a quantum world (cf. [72])? How does genuine quantum behaviour survive in a classical environment? While the first (in some sense more fundamental) problem has been addressed intensively, for example, within so-called decoherence schemes (cf. [183]), the latter question has not yet enjoyed that much attention, let alone systematic inquiry. Should not design principles exist by which quantum phenomena would tend to be enhanced or suppressed, respectively? From design of structure to design of dynamics — is this the way in which R. Feynman’s dreams might be coming true: “There is plenty of room at the bottom” (cf. [54])?