Seems to me that a pretty good argument can be made in both of these examples (2nd-gen RX7 and the e36 325) to have multiple spec lines. But the simplicity argument has merit, too. Looking at first principles, which way do we think the scales tip? I ask because others might agree with Greg's contention of "what IT is supposed to be about..."

(FWIW, I personally tend to agree with his thesis, even if ITAC practice typically leans the other direction.)

KK