Goldilocks and the Three Chairs

(image from http://www.ndaga.org/index.html)

Goldilocks survived her encounter with the three bears and lived to a ripe old age, when she became plagued with rheumatism of her left knee.

Unable to bear the pain, she decided to see a healer.

She walked into the woods with the aid of her cane, and pretty soon she came upon a house of healers.

The first healer, a shaman, invited her to sit on a yellow chair, its back carved in the shape of a totem bird, saying to her:

"Your pain is due to a demon which is living in your knee, and I shall rid you of the pain by sticking these needles into your leg, piercing the demon and driving it away."

The second healer, an acupuncturist, invited her to sit on a red chair, its back carved in the form of the element Fire, saying to her:

"Your pain is due to qi stagnation caused by excessive dampness, and I shall rid you of the pain by sticking these needles into your leg, unblocking the qi."

The third healer, an anaesthetist, invited her to sit on a black chair, its back carved in a geometric, sterile shape, saying to her:

"Your pain is due to chemicals released during inflammation, and I shall rid you of the pain by sticking these needles into your leg, which will stimulate the release of chemicals which will relieve the pain."

Which chair, O gentle reader! should Goldilocks choose?