Graham Hancock argues that he accesses the spirit world by taking Ayahuasca plants. He perceives that he is connecting to what he calls the spirit world. I don’t think it is the case. I think that Ayahuasca provides perhaps a confusing; perhaps a distorted; perhaps a good one (I don’t know, I didn’t try it myself) – to rearrange the neuron circuits (the synapses) in a way that it receives that message.
Minute 33:00, YOUTUBE LINK