Cuddles:

Ashles, help me out here. At first I used the word "observations" referring to my subjective impressions of for instance the inside of human bodies. After several thread-pages of discussions Ashles and I agreed that to avoid misunderstandings we would use the word "perceptions" to refer to my subjective impressions that have not been proven to be reality based yet. And now Cuddles comes in and wants another word. I am very upset because it is never right. Don't you guys have like a skeptics' language that you all could agree to and tell me about so that we're all speaking the same language? I'm tired of being bullied around like this.
Okay I have to say I do not think I have personally been entirely clear enough about that. I'll put my hands up to that.
I previously stated at one point that Perception implied real external stimuli. I was using that (in the context of the previous posts) to imply the perceptions exist as a layer of processing on top of observations from real world stimuli.
But I don't think that explains it clearly enough. And isn't strictly speaking (which we should be here) accurate.
So I will try harder this time.
"Perceptions"
is the correct word.
"Observations" implies detection of real world stimuli.
"Perception" is what is experienced subjectively by a person. It adds the processing of the environment performed (correctly or incorrectly) by the sensory systems of an individual.
You can only Observe what is real.
You can Perceive that which is incorrect or imagined.
To clarify yet further.
In this illusion:
It would be fine to say you "Perceived" that squares A and B were different colours.
You would be incorrect (they are exactly the same colour), but that is due to the nature of your visual system.
But it would be incorrect (within the scope of the strict language we are using here) to say you "Observed" the colours were the same, as it is an incorrect assumption.
PhotoShop could, to all intents and purposes, "Observe" the colours correctly as the eyedropper tool would record the same value for both squares. It obviously doesn't have the same processing as our visual system does.
Similarly someone on drugs may "Perceive" strange hallucinations and creatures.
They would not be able to say they "Observed" them as it is based on no real-world stimuli.
So yes, "Perceptions" is the correct word.
I think the point Cuddles is making is that you are using the word "Perceive" as a simple substitution for "Observe" without the necessary difference in meaning.
That is illustrated in your asking "Is not visual perception of a person a stimulus?".
Cuddles has already explained why that doesn't make sense (actually so did I) but again, to clarify.
You can
observe a person standing in front of you. The person (specifically the light reflected from them) is real world stimulus.
You may
perceive they have an aura around them.
But the perception of the aura cannot be said to be coming from real world stimulus. The aura isn't real or detectable by anyone or anything outside of your own sensations.
If it were subsequently discovered that you had receptors in your eyes never before encountered by science, that, for example, detected heat eminating from the person, and that was what had appeared to you as an aura, then it would at that point (when demonstrated that the information you detected did genuinely relate to real detectable stimulus) be correct to say you were
observing an aura.
(Well, more correct to say you were observing thermal information as we would now know that's what it was.)
My previous reference to Perception was in reference to this claim in which the Perceptions Anita are describing are as a result of looking at people. The stimulus of the person is an observation. What is actually experienced by Anita that is her "Perception", whether it includes real stimuli or anything else not detectable or experienced by anyone else. Or any independent detector.
I think I now see her confusion on this issue. Apologies if any confusion there came from me.