someone left what looks like an honest review and it's 4 / 5 but they only write positive things
That may well be me. I don't think that "meets requirements" should merit a 5. When I do reviews, I view a bare "meets requirements" as 3 or maybe 4, depending on the type of product. I want to leave some headroom to be able to point out products that really do excel.
Another ambiguity is whether the rating is on an absolute scale, or normalized for value (it's not a perfect product, but it's super-cheap).
That may well be me. I don't think that "meets requirements" should merit a 5. When I do reviews, I view a bare "meets requirements" as 3 or maybe 4, depending on the type of product. I want to leave some headroom to be able to point out products that really do excel.
Another ambiguity is whether the rating is on an absolute scale, or normalized for value (it's not a perfect product, but it's super-cheap).