“But surely there is a case in
which I'm justified to say “I see red”,
where I'm not lying, & one where I'm
not justified in saying this so!” Of course
I can be justified by the ostensive def.
or by asking the others “now isn't this
red?” & they answer that it is. But you
didn't mean this justification, but one
that which justifies me ˇprivately whatever others will say.