Stu begins a series of posts about that funny parental tendency to give the same thing to each child "to be fair":
People have different needs, and treating them fairly means treating them differently, not the same. This is obvious when we take an extreme example: let's say one of my children is physically disabled, so we spend a few thousand dollars equipping the bathroom so they can use it easily. We don't immediately think we have to spend a few thousand dollars on something specifically for each of our other children.
If we think treating people justly or fairly will mean treating them according to their needs, then we will feel free to do different things for different people. 'Loving others' does not call for a one-size-fits-all response; it requires us to know people well and think about how to love them.