 Second, in some cases \(A\) may fail to form the belief that a transaction is unfair due to bias in his selection of evidence or how he weighs evidence. For example, consider slavery. If any kind of relation is exploitative, surely slavery is. Some slave holders surely knew slavery was unfair and yet continued to engage in the practice. But suppose some held false beliefs about a ‘natural’ hierarchy of races. In such a case they might fail to believe their interactions were unfair. Yet, their holding these false beliefs amounts to negligence: they were surely presented with evidence that contradicted them.