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Counterpoint: No. I feel like you just trade one set of delusions for another with psychedelics. Talking to plants or rocks isn't real, its just another way the ego and the imaginative part of the mind plays with itself.

If you're looking for consciousness expanding activities, I found my meditation practice and buddhist readings were 1000x more powerful than my drug attempts. For an HN'er I'd recommend starting with this:

https://www.amazon.com/Why-Buddhism-True-Philosophy-Enlighte...

as its more sciency/modern than diving into the Pali Canon or popular but dated 1960s attempts to westernize Buddhism.

View this Book on Amazon