What did they say about brain states and why is it wrong? I can personally drop into a trance state far easier with the 4hz binaural beat generator at https://mynoise.net/NoiseMachines/binauralBrainwaveGenerator.php compared to just silence. However that setting does make you less alert and closer to sleep. Thinking about getting Tom Campbell's binaural beat set which alternates between lower frequencies to achieve steady trance and slightly higher ones to maintain alertness. Gateway tapes also do this I believe but I don't like the voice in them. If you make use of trying to modify your brain state for practical purposes, how does your approach differ from mine and why? Thx