Puree all ingredients in blender. Thin as needed with water, tablespoon by tablespoon until dressing is thick enough to coat leaves of lettuce, but not act weighty.
Jeremy Bailenson, founding director of Stanford University's Virtual Human Interaction Lab, is studying whether the experience of being a virtual cow will make people feel more empathy. "[Our previous work] showed that if you had occupied the avatar of another person, you showed empathy toward them," Bailenson says. "But no one had ever tried this with another species."