Why materialists are predominantly materialists

[Angrboda]

A reductionist isn't necessarily proposing a theory of signs by arguing that it is rooted in physical phenomena.

they [reductionists] would say that there is nothing beyond the physical required to understand the nature of signification.

These are mutually exclusive positions. If something can be explained by the purely physical terms then it is firmly rooted in the physical. If something isn’t rooted in physical phenomena then it is not purely physical. Nevertheless, there may be reductionist philosophies with which I am not familiar.

By the first I simply meant that a reductionist isn't necessarily proposing a specific explanation of how sign systems work by suggesting that they have their basis in the physical. I didn't mean that the reductionist is arguing that signs do not reduce to the physical. Only that you don't have to possess a full fledged theory of the subject to be a reductionist.