What I'd like to see is if the LLM would exhibit the same behavior wrt other types of predictive selections. For example, rather than choosing people from four tribes, choosing flower seeds from four packets, or choosing lottery tickets from four machines.
Bias cannot be avoided in any information, because it's always a position of what is relevant and in what presented order. The only unbiased thing is nature itself in its immediate instantaneous totality.
In any case I feel the paper is interesting but almost begging to be misinterpreted.