 Insights into the nature of the phaneron may be demonstrated in Peirce's argument that the cosmos consists of the complete phaneron and it has indecomposable elements.There is also the case of Peirce's understanding that external reality cannot be considered a phaneron since it is not totally open to observation and that there are always aspects to reality that are known during observation.In his writings, Peirce characterized phaneron in various ways and these are motivated by four different concerns.