Outside of the work to study and improve available technologies ("how far can we push a hammer"), you do not draw an individual with anomalous hands because yo

Outside of the work to study and improve available technologies ("how far can we push a hammer"), you do not draw an individual with anomalous hands because you have an ontological model in which "humans normally have five fingers per hand". Knowing "how the world works" is the appropriate source for subsequent expression of a representation. Somewhere in the architecture a world model should be formed.