The problem is, no matter how you wrote the prompt, the way you wrote it still triggers some intrinsic bias of LLM.
Even a simple prompt like this:
=
I have two potential solutions.
Solution A:
Solution B:
Which one is better and why?
=
Is biased. Some LLM tends to choose the first option and the other prefer the last one.
(Of course, humans suffer from the same kind of bias too: https://electionlab.mit.edu/research/ballot-order-effects)