In particular, this paper details an unconstrained, intrinsic HE experiment where a network of transistors sensed and utilised the radio waves emanating from a nearby PC. Essentially, the EA led to the construction of a radio. This is, as far as the authors know, only the second example of a physical device whose sensors were constructed by a process analogous to that of phylogenetic change. We compare the circuit to the first device constructed in this way: Gordon Pask's electrochemical ear . We argue that both of these devices display three key characteristics: they were constructed and tested in real environments; their basic primitives were not constrained to experimenter specified functional roles; and the primitives were sensitive to a wide range of environmental stimuli. We highlight the difficulties in implementing comparable processes in simulation and argue that only unconstrained physical systems situated in real-world environments can ever construct novel sensors in a way analogous to the phylogenetic process found in nature.