Packaging
If we have a spherical candy with no nut inside, is it a nutless peanut candy, or an extra-large plain one?
We might ask: "What did it say on the bag it came out of?" But does the packaging change its nature, somehow? The packaging is just context, not substance.
Yet certainly the packaging changes its interpretation. If we pulled one of these out of a peanut M&M bag, we might feel robbed of a peanut. The size is not impressive - all peanut M&Ms are large.
And yet if we pulled the same candy out of a plain bag, we might feel blessed for such a bountiful harvest. Yet the candy is the same, in either case.
If we judged them by their inherent qualities, not relative to expectations, then we'd instead reach the same conclusion in either situation.
We have difficulty not judging an individual relative to its peers, even if that comparison is relatively unimportant.
There are other situations where context seems more relevant. If we need a hammer but only have a screwdriver, we'll probably be unhappy with it even if the screwdriver, as a screwdriver, is quite good.
All candies have a simple purpose — to please their consumer. That is their primary context. Packaging adds another layer of expectation that provides more opportunities for disappointment.
So too with people, and other things.