The George Harrison song on the Beatles album "Sgt. Pepper's Lonely Hearts Club Band"; the song named "Within You Without You": it's very condescending toward people who don't "know" the truth — this "truth" being based on eastern philosophy and eastern religion.
Building additional mental structures trying to explain it; those are just additional experiential moments.
People are susceptible to the many kinds of cognitive biases; the errors the mind makes. Recognizing these in operation and correcting for them improves the discernment of truth.