Bests & Worsts Reviews from Amazon

The idea sounds great, but it doesn't work. I see no correlation between what Muse records as "what is going on in my brain" and what I observe what's going on in my brain. I am experienced in meditation and had no problem with the brief meditation of the app. I was pleased that I got a very high percentage of calmness. But then I wanted to see whether Muse notices when my mind is wandering. And I used the app several times not meditating at all but deliberately letting my mind wander, thinking angry and troublesome thoughts, thinking about work. But there was no difference. I still got a high percentage of calmness. Eyes closed or open, no difference. Completely different mind set but the same result. The customer was of no help either. I contacted them but got no reply (other than a standard mail) I returned it.