They didn't have any objective information that a Car is a good mode of transport when they first invented it. They tried to stop progress on that saying it was a harmful thing. It became popular amongst those that had money and advertising.
I don't know if Holosync will be found to be more effective than other methods but there is evidence that entrainment does alter brainwave. And there is benefit gained by a majority using entrainment systems.
Holosync may not be the best choice for everyone but then not everyone needs to drive a Mack truck on the road either.
I will also concede that the people who warned that cars are a dangerous thing were right. We have to learn to use and respect what we are using. I choose not to ride a motorcycle because the risk of injury is greater and I can argue that they are expnsive and only sold for a glorified image. Still it is a personal choice and just because there is no objective data, everyone who uses it can explore whether they experience any subjective results that may one day be collected and tested objectively.
For the record I am not a Holosync customer. I made my personal decision about the product some time ago.
Alex
