Distinctions, Assumptions, and Categories

In  previous posts there has been some conflation of distinction, assumption, and categorization. To clarify the matter in our minds, Reba and I dialogued about it a while. And what we came to is that

• Distinctions are primal. They have to do with boundaries / edges. They put into foreground that which was part of the background. And part of that process involves perceptions of a boundary between what is put in the foreground and the background. And as Spencer Brown notes in Laws of Form that the reason for making a distinction is for a value.
• Assumptions seem to be about what is distinguished - its attributes, capabilities, implications, ...
• Categorization happens when you have an ecology (group) of distinctions. It is a way of organizing those distinctions into some structure.

Thought I'd put  these peregrinations down before they got lost in the mists of time.