
The way I've heard it explained is that it's not really a soul trapped in them, but the essence of someone's experience that rubs off onto it as they carry it, and then the combined experience of everyone who's carried the crystal helps the next carrier to learn what they already did at an accelerated rate.
It's like swallowing the cliff-notes in pill form before having to go take the test.
It's like swallowing the cliff-notes in pill form before having to go take the test.