"Well, if you want to start on the human level, which is where I know how to start - "
"As in virtually all human countries known to man, the vast majority of Cheliax's population is engaged in agriculture; arguably this is where the vast majority of all human effort ends up going, generating enough food to sustain our population. But in both Old Cheliax and Infernal Cheliax, an extremely significant chunk of that agricultural labor is done by halfling slaves. This isn't true of many of our direct neighbor states, who have quite recently abandoned slavery while high on the concept of freedom, and are probably experiencing various problems over it. Other older and more stable countries do use agricultural slavery, but don't segragate as heavily by race as we do; many of their agricultural slaves are humans. What differences are borne of that? Halflings eat less; I'd wager they eat enough less to offset any direct hits you take to labor efficiency by using smaller workers, which puts us ahead of other people. There are going to be a bunch of differences that we can't know about, that are down to the differing natures of halfling and human slaves. Plus, if Keltham ever gets ahold of any accurate information about Cheliax's total land area, climate, the percent of it that's farmland, the percentage of people who are farmers, and what kind of food we grow, and possibly half a dozen things I wouldn't know to expect to be connected with any of this, and then compares them to our population numbers, the amount of food we grow won't match what we would be producing if all of our farmers were human. Either including or excluding the halflings will give the wrong number of inhabitants for the amount of food production we actually ought to have. We could fix the number any way we wanted if we knew what all the inputs were, but obviously we don't."
"Obviously, the safe and easy thing to do is to declare that alter-Cheliax uses the same amount of enslaved halfling labor as actual Cheliax; we won't need to fix anything, the numbers will line up, and it's hardly incompatible with being a lawful neutral country. But we sure seem to be going out of our way to keep Keltham from encountering any more of the concept of slavery than is absolutely necessary, so if you think he's likely to have an attack of conscience over five million enslaved halflings, or however many it is - if anybody even knows - such that we think that alter-Cheliax absolutely mustn't have slaves, then we have a bunch of potential inconsistencies - or improbabilities, I guess - hanging out at a pretty basic level."
"We should almost definitely have slaves. But, like, as an example."