Another word for 'cave' is 'echo chamber'. If you don't care much about whether what you believe is true or not, there's no need to test it, but in that case what's the point of believing things?

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asphodele 2 hours ago | parent [-]

Another word for 'going outside the cave' is 'seeking external validation'. If you need other people to tell you if what you believe is true or not, do you actually believe anything?

	▲	idiotsecant 2 hours ago \| parent [-]
		Other people are one of many ways you can test what you believe to be true but, yes, sometimes other people might have figured something out that you haven't, believe it or not.