In fact it might be a useful definition of being - that which does not change just because we change how we talk and think about it. Or is that horribly naive? — unenlightened
This definition might be false and naive under one reading, and unobjectionable, though consistent with the kind of
realist conceptualism that I take from Frege, Wiggins, McDowell, Hornsby, Putnam and Haugeland. Under the second reading, things indeed don't change just because we change how we talk about them. But that is true also of planets and intimate relationships. The intimate relationship of course changes if *participants* in it change how they talk about it, but that's just because how they talk about it is partially constitutive of it (just as how we exchange money is largely constitutive of the value that it has). How *other* people change the way they talk about it doesn't have any such impact, except inasmuch as it might disclose different features of the relationship they are witnessing (and, of course, the participants themselves can be influenced by this external gaze if they come to be aware of it). But this is just to say that how they (the non-participant observers) talk about the relationship between Pat and Chris, say, determine which features they are disclosing, not that they are changing those features.
The case of planets is more clear cut. How we talk about them determines (or rather singles out) some determinate concept of a planet (a sortal concept) under which we subsume some celestial bodies. Given one possible perspicuous understanding of the word 'planet', one according to which a planet must (among other things) have cleared out its path, Pluto isn't a planet. But this fact doesn't change when we change how we talk about planets. What changes is the
reference of the word "planet" (the sortal concept referred to, also on the level of
Bedeutung according to Frege) and hence, also, the truth value of the *sentence* "Pluto is a planet" (since the sentence now has a different meaning).
Most revealing of all might be the concept of a secondary quality. Wiggins and McDowell both defend what has been dubbed secondary quality realism. This realism undercuts both scientism and the fact/value dichotomy (also attacked by Putnam). Secondary qualities, such a color and smell, that we perceive, and ascribe to objects, also don't change when we change the way that we talk about them. Not always, in any case. Talking about them can induce changes in the brute shape of our sensibility and aesthetic appreciation. That can lead to a change in the reference of the words that we use to refer to secondary qualities. That much is easily granted (it is akin to redefining the word "planet" under the impetus of some new pragmatic scientific consideration).
For an object to be red just is for it to look red to normal observers under normal conditions. What counts as normal, in both cases, is tacitly part of the way we understand and use the concept in ordinary use. (This necessary tacit understanding is underlined in Sellars'
Empiricism and the Philosophy of Mind) It would be an error to view the perceptual concept thus defined as being subjective and our judgments about unchanging objects liable to change if, and when, the conditions of our sensibility change.
This would be to misconstrue the definitional relationship between
looking red and
being red, rather in the way Russell's (or Quine's) definite description analysis of ordinary proper names misconstrues the naming relationship between names and objects. It misidentifies the modal character of the relationship. This has been highlighted by Kripke in
Naming and Necessity. Putnam (implicitly) and Wiggins (explicitly) have brought Kripke's insight to bear on the case of secondary qualities. Just as, when one uses the proper name "Gödel" to refer to Gödel, the Fregean
sense of the mane can't be expressed with a definite description, even though such a description may (or may not) have been used to secure the reference of the name when it was first introduced into the language, the sense of the predicate "red" doesn't either reduce to the sense of the definite description "looks read to us". It is rather the reference of the predicate (the sensible quality) that is thereby fixed. The upshot is that "...being red" as predicated of particular objects yields perfectly objective judgments. We may change the way we use the predicate "...is red" (which would amount to changing the reference of the predicate), and, indeed, do so under the impetus of a change in the shape of our brute sensibility, aesthetic appreciation, and/or discriminatory abilities. But that would amount to changing the concept being used, that is, not (necessarily) a change in judgment, but a change in topic. (It can also occur that the
conception was revised, and hence also the judgment, but that is beyond the present point).
Naive realists believe that there is a fact/value dichotomy, where values are placed on the side of our contingent sensibilities and understandings. They thus believe science ought to be tasked with peeling off (or explaining away) the appearances that our use of secondary quality concepts yield. What would remain of reality after mere appearances (to us) have been thus peeled of is the objective world as it is in itself. But if the dichotomy is illusory, as I believe it is, then the peeling off leaves nothing.