The data contains far more metaphorical expressions (a total of 68 deriving from 10 mappings) that relate to this subject domain than ones that describe nature (18 distributed over 6 mappings). As with metaphors of nature, it is ‘Evolution Encoded’ that is richly endowed with such expressions (a total of 34), closely followed this time by ‘Synthetic Life’ with 29. So in this instance too, the discourse of these articles can be expected to be heterogeneous in nature.