Now the language ˇwe're in when we adopt the sense datum-notation is

to
that we

forget the difference between the grammar of a statement about sense data & the grammar & an outwardly similar statement about physical

reality
objects

. (From this point one might go on talking about the misunderstandings which find their expression in such sentences as “we can never see an accurate circle” or “all our sense data are vague”, or about the ideas of absolute position & ˇabsolute motion ˇ& size in visual space

etc. etc.
etc. etc..)

Now we can ˇmake use ˇof such an expression as “pointing to the appearance of a body” or “pointing to a sense datum”. Roughly speaking this sort of pointing comes to the same as sighting say along the barel of a gun. Thus we may point & say “this is the direction in which I see

my
the

immage in the miror.” One can also use such an expression as the appearance or sense datum of my finger points to the sense datum of the tree etc. It is a different case ˇhowever when I point say to a sound

where a sound seems to come from or to the place where I fee again when on being asked point to

my
your

forhead I do so with closed eyes etc.
Now when ˇin the solipsistic way I say the sentence “this is what's real⌊l⌋y seen” I point before me & it is essential that I point visually. If I pointed sideways or behind me as it were to things which I don't see the pointing would in this case be sen meaningless to me it would not be pointing in the sense in which I wish to point. But this means that w⌊h⌋en I point before me saying “this is what's really seen” although I make the

gesture
movement

of pointing I dont make any use of it for I dont po⌊i⌋nt to one thing as opposed to another at all. (This is almost as though traveling in a car & feeling in a great hurry What [we| I] do is similar to this: when we travel in a car & feel in a great hurry I instinctively press against something in front of me as though I could

push
shove

the car from

its
the

inside)
If it

makes
made

sense to say “I see this” or “this is seen”, pointing to what I see, it must also makes sense to say “I see this” or “this is seen” & to point

to
at

something I don't see. ¥⋎• And

in this way
therefore

to sa the solipsist “only this is really seen reminds us of a tautology.

(2015–) Wittgenstein Source Bergen Nachlass Edition (WS-BNE). Edited by the Wittgenstein Archives at the University of Bergen under the direction of Alois Pichler. In: Wittgenstein Source, curated by Alois Pichler (2009–) and Joseph Wang-Kathrein (2020–). (N) Bergen: WAB.