There are worse schemes, but that is barely comparable to Vedic chanting. 3-pick-2 as a method is quite good but also quite vulnerable to a bunch of transmissi

There are worse schemes, but that is barely comparable to Vedic chanting. 3-pick-2 as a method is quite good but also quite vulnerable to a bunch of transmission errors beyond simple memory issues. Over long periods of time there is a higher risk of group think or status plays leading to wild changes. Of course the vedas aren't immune, but it is a lot more effort to get them wrong than just a few people thinking "we want to change the story". A group would have to be hugely motivated to successfully change the chant.