It is hard to tell, as someone else said Jones town is a good example of insane ideas taking hold of a group.
Historical accuracy is difficult even on short time scales. Penn and Tell on their show BS used the "official" recipe of Elvis Presely Banana Bacon Sandwich as an example of how even in living memory two people in a position of authority on these things could have two very different recipes.
To be a little more high brow, Pliny the Elder was the one that wrote of Emperor Nero playing the harp as watching Rome burn. He wrote this 150 years (?) after the fact and was very skeptical of this claim as it had been passed along verbally and manipulated heavily along the way.
Historical accuracy is difficult even on short time scales. Penn and Tell on their show BS used the "official" recipe of Elvis Presely Banana Bacon Sandwich as an example of how even in living memory two people in a position of authority on these things could have two very different recipes.
To be a little more high brow, Pliny the Elder was the one that wrote of Emperor Nero playing the harp as watching Rome burn. He wrote this 150 years (?) after the fact and was very skeptical of this claim as it had been passed along verbally and manipulated heavily along the way.
Could be similar here.