Similarly, Scott shows that the value of science in his twentieth century, post-modernist context is bought about by a warped sense of morality and humanity. Tyrell himself concedes to the film’s protagonist, Deckard, “Commerce is our goal here at Tyrell. More human than human is our motto.” The noun, “commerce,” clearly exemplifies Tyrell’s own lack of humanity as he values profit over human emotion and compassion, while the materialistic reference to manufacturing beings with more “humanity” than real “humans,” raises questions about what constitutes humanity. This is a post-modern theme, as the post-modern movement of Scott’s context was instilled with uncertainties regarding faith in science and human values, and he plays upon these uncertainties to more thoroughly portray his anxieties about the future. This warped sense of vision and its connection to the destruction of nature is further emphasised by the use of props, specifically through Tyrell and the interior of his buildings. Tyrell himself wears glasses, a prop which symbolically represents his perverted values, and characterises him as being more concerned with commerce and profit, values of Scott’s context, than with the preservation of humanity and the natural world. Like Shelley’s creature, the Replicants, demonstrate basic human needs and values, those which the ‘real humans,’ have lost. This is exemplified through the characterisation of Roy as merciful, sympathetic, fearful and affectionate, demonstrated by him saving Deckard, displaying grief over the death of Pris, and by his fear of death and desire to survive. Scott utilises this comparison between the “real humans” and the Replicants, to demonstrate the damage which science inflicts upon humanity.