The obvious fix

The guess was 10 dollars too low. So there is an obvious thing to do. Can you tell what?

Yes, turn the weights up until the guess is exactly 22.

It works. Turn up the two weights that were doing anything, cabernet and plummy, until the estimate reads 22. In the picture they have gone from 8 to roughly 14.7 each.

But getting this bottle right does not tell us what each taste should count for.

Cabernet and plum are both contributing to the guess. As long as their two contributions add up to 22 dollars, the bottle is priced correctly. The bottle cannot tell us whether cabernet deserves most of the credit, plum deserves most, or they should share it.

Leave plummy alone and push cabernet from 8 up to 18, and the guess is 22. Leave cabernet alone and push plummy from 8 up to 28, and the guess is 22. Raise both a little, as the picture does, and the guess is 22.

There are infinitely many pairs. Lower the cabernet weight by 1 and raise the plum weight by 2, and the total stays exactly 22. You can repeat that with changes of any size, including decimals.

Viognier and apricot are both at 0 for this bottle, so their weights can also be anything without changing the guess.

Every one of these settings is perfect for this bottle. It gives the correct total, but it has no opinion about which weights deserve the credit.

The bottle did not choose these weights. Our way of turning both dials together did. A different adjustment could have reached a different pair and still priced the bottle perfectly.

Which is worth remembering when the next bottle arrives.