Not necessarily. They say it works 70% of the time.
I'm a Bayesian, and looking at the posts here, I'd say the probability distribution of this probability is beta(5,2). The HDR runs from around 40 to 97 percent and it peaks around 0.8 so what you and the other guys are saying, plus a non-informative prior, agrees with what they say.
You're just one of the unlucky beta(2,5). Too bad.
I'm a Bayesian, and looking at the posts here, I'd say the probability distribution of this probability is beta(5,2). The HDR runs from around 40 to 97 percent and it peaks around 0.8 so what you and the other guys are saying, plus a non-informative prior, agrees with what they say.
You're just one of the unlucky beta(2,5). Too bad.