 Equal Weight is also motivated by considerations regarding testimonial evidence. The weight of a piece of testimonial evidence is proportional to the epistemic position of the testifier (or what the hearer’s evidence supports about the epistemic position of the testifier). So, if you have reason to believe that Jai’s epistemic position with respect to \(P\) is inferior to Mai’s, then discovering that Jai believes \(P\) will be a weaker reason to believe \(P\) than discovering that Mai believes \(P\). However, in cases of peer disagreement, both parties are in an equally good epistemic position, so it would follow that their opinions on the matter should be given equal weight.