the spiders compassion for his sonwhich was , to the bane of those who might have seen the poetry in it , just as much a biological mechanism as his own breathing and just as much a survival mechanism as his own brutalityhad similarly evolved to incorporate the economics of ensuring the perpetuity of his genes well beyond the span of his own lifetime , as now evidenced by the critical importance he seemed to place on obtaining for his offspring those supplementary parts which could affect artificial extension and which should , henceforth , give way to the necessary creation of enhanced abilities within the ecosystem .