You forgot the most important thing about the Supposed AVXL 273 placebo effect: it is dose dependent! Those underdosed showed little placebo effect, those given higher doses showed more placebo effect. So it is a rare placebo effect that is strongly correlated with dosage, the bigger the dose of 273, the bigger the effect (improvement).......OR....273 actually works!
combine that with the confirming preclinicals for all CNS diseases with similar pathologies...alz, parkisons, epilepsy, MS, rett.....a very unusual placebo effect indeed.