 But the Crutchfield-Mitchell approach suggests a different perspective. Firstly, the emergent (both in the  E2-  and in the  E3-  sense) computational properties in CA can in an important sense be objectively defined (see Crutchfield 1994a and the more accessible Crutchfield 1994b): although it is customary in this setting to talk of emergent computation being “in the eye of the beholder”, because not explicitly encoded at the base level, the detection and classification of patterns is itself algorithmic. Secondly, Crutchfield characterizes CA-emergence of this kind as, in a sense, intrinsic: the emerging patterns “are important within the system” (Crutchfield 1994b: 3), not merely important for an observer outside the system. More precisely: they are mathematically grounded on the basic features of the system, despite not being explicitly mentioned in the standard abstract characterization of the program, that is, the transition rule implemented in the CA cells (Crutchfield mentions as non-intrinsic emergent phenomena the patterns in the Belousov-Zhabotinsky reaction and the energy recurrence in an harmonic oscillator chains reported by Fermi, Pasta and Ulam—see Crutchfield 1994b). 