This can be reduced to something like Newton didn't discover gravity, Newton formally described it in mathematics, and anyone dedicated enough to pursue the formal description could have done much the same. Much in the same way, the Eurocentric view is wrong to attribute things and with the way cultural interaction spheres tend to work it's even more difficult to attribute developments to a given culture or individual. E.g. not only are we "standing on the shoulders of giants" but the scientific domain is pruning viable explanatory paths with each passing moment, narrowing the scope of positive knowledge and increasing the sharpness of the borders of negative knowledge. For instance China had what was effectively fiat currency well before it became widespread in European nations; they also managed to invent moveable type which was ineffectual and thus discarded - but Gutenberg gets the attribution?