N Consider now this case: Someone says
I remember ˇyesterday having seen everything red
green & vice versa.

  Consider this case: someone sais it's green I can't underst.
I see everything red green blue today & vice versa.
We answer: it must look queer! He sais
it does & e.g. goes on to say ho cold
the glowing cole looks & how warm
the clear (blue) sky. I think we should
under these or similar circumst. bi incl. to say that he saw red what
we saw green. And again we should say
that we know that he means by
the words blue & red what we do
as he has always used them as we did had.