It broke what it already had

So pour the first bottle again. Same wine, same tasting, nothing about it has changed.

The wine costs 22. The model now says nearly 26.

Cabernet is the line that did it. It contributes 18.4 dollars where it used to contribute 14.7, and that extra 3.7 is precisely the amount bottle three needed. Plummy has not moved at all, and is still doing exactly what bottle one asked of it.

The second bottle has drifted too, from exact to about 6 dollars over.

So the score after three bottles is one exact answer and two spoiled ones. The exact answer is the bottle seen last.

Carry on fitting one bottle exactly and the newest answer will keep taking control of every weight it shares with earlier bottles. Some earlier answers may survive when their active weights do not overlap. Others will be spoiled.

Being exactly right about the wine in front of you says very little about every other bottle.