# Not really seen - what am I?

Half of me is all the same.

The other half is just a proposition.

When I'm observed, I'm not really seen.

Probably because I'm in full opposition.

Hint:

First half is about the signifier (word), second half is about the signified (object)

It might be :

MIRROR

Half of me is all the same

RRR is three times the same letter

The other half is just a proposition.

The other letters can form IMO, acronym for "In My Opinion".

When I'm observed, I'm not really seen.

Looking in a mirror, I rather see what's reflected than the object itself.

Probably because I'm in full opposition.

You usually stand opposite the mirror when you observe yourself.

• Exactly right! Nice work. Sep 17, 2021 at 16:03

Could it be:

The Moon?

Half of me is all the same:

Two identical O's out of 4 letters

The other half is just a proposition.

ON is a preposition... although if it's the 'other half', shouldn't that be MN?

When I'm observed, I'm not really seen:

In a sense, you only see the sun's reflection, not light produced by the moon.

Probably because I'm in full opposition:

Full Opposition refers to when the sun and full moon are in approximately opposite positions in the sky

• Great guess, but this is not correct. Sep 17, 2021 at 16:05