>>>If an observer is a class, and matter is a class, then the observer isn't actually made of matter.
>>>
>>>So that probably can't be right.
>>
>>Why couldn't a particle also be an observer?
>
>
>Because I am an observer, but I am not a particle.
>

In your previous response to Dragan you seem to imply that an observer should be matter. Isn't the particle the entity of matter? In the quest for the absolute frame of reference, perhaps it would be better to first define the notions of matter, absolute, observer, etc. :)