 It should be emphasized that those who favor teleosemantic theories rarely restrict the relevant functions to those that derive from natural selection operating over an evolutionary span of time. As remarked earlier, there might be non-intentional selection processes that operate over the span of a culture or over the span of an individual’s own development or life. Meme selection, conditioning or some other forms of learning and neural selection are considered to be relevant kinds of selection by some proponents of teleosemantics.