[Breadmaster] Well, as I said, I suspect we may have to agree to disagree on that. I see no problem with asking what colour 1815 is, or indeed with the proposition "1815 is green." There may not be many ways of reasoning with it, and certainly it might be hard to prove it one way or another (short of formalised synaesthesia!) but I don't happen to believe that those issues prevent it being true or false. If it's a category mistake, then no number/year has a property equivalent to colour, and the statement is false. It's still a proposition.

You said earlier that "ought" does not reduce to "is." Fair enough, but you then say "X is wrong" is really "Don't do X!" in disguise, or, to put it another way, "One ought not X." Surely you're self-contradicting here. At any rate, I fundamentally disagree that just because (if we allow this, which I wouldn't) "X is wrong" may be written "don't do X", that it must always be treated as "don't do X," and that the "X is wrong" form must be disregarded.

[Bm] Well, I'm arguing, or rather exploring the hypothesis, because I think there's some mileage in it, that moral statements are propositions. They are truth claims about the moral universe. The normative consequence -- you should do that which is good, and avoid doing that which is evil -- is a secondary matter. Someone who perceives the moral truth does not have to bludgeon himself with "shoulds" into acting accordingly, he will do so as an inevitable conequence of seeing the truth, the same as he will step out of the way of an onrushing car when he perceives it, and for the same reason.

(Projoy) You can't learn absolute pitch, or unlearn it either, which is one reason I play the trombone. All the other blowing instruments in a jazz band are transposing and if I read a C I don't want to hear a Bb, and certainly not an Eb (alto and baritone sax). Trombone is written in bass clef, which results in an impressive stack of leger lines for the high notes. If it's on a space and "in the stratosphere" it's a C (octave above middle C). Otherwise it's a D (hopefully a Db) which I can just about do with a following wind. Why don't they just go into treble clef? Because they don't. Maybe not all trombonists are pianists.

Never trust a Vogon when it comes to directions.I've been stuck in the plorii system for the last 8 months!!! But now I'm back...........

To answer my own question re: perfect pitch, I googled a paper which says: "we also observed a significant association between AP and the age at which an individual first began playing music. For the AP group as a whole, the mean age of starting musical activities was 5.4 ± 2.8 years, whereas, for the non-AP group, the mean age was 7.9 ± 3.2 years (P < .0001)."