Discursive mind is like a workshop cluttered and overflowing with partly completed projects. Different ones catch your eye at any moment and you reach for them (upsetting several others in the process) work on them for a little and the put them back still unfinished as your attention goes to another. Each such task is marked by a span of time, between say when it was ordered and when it is due, with various submarkings for revisions. These time-stamps are the index for each such task, since it is the differences in spans that allow for some order in the chaos. You don't mistake one for another because their inceptions and terminals are distinct. These time marking belong to a diagrammatic version of time, an ideal tabulated version of time as in a ledger with only a loose connection to experiential time. Feeling, on the other hand, exists only in the experiential now, only in the actual moment, Hence feelings can have no proper discursive component, and that they appear to is only because what you take for feeling is a sort of hybrid. Perceptions are also hybrid, a yoking together a discursive component in unreal ledger time and a felt component in the punctual now. This is how perceptions can fail to anchor you in the present but slide off into discursive confusion and why you can't know yourself in the present with what you take to be knowledge.