This one doesn't really seem like a question, but I want to discuss it, This is my theory on why Killigan's 'wits' are still not decreasing one by one on day 1 to day 9 in Redroot Wilds, and I hope this explains why that is.
I think the theory goes like this: From Day 1 to 9 in the Redroot Wilds, Killigan was essentially riding a stroke of luck. He managed to survive by finding enough food and the source of water, and he likely stumbled upon a safe place to rest, perhaps a meadow or something similar, where he remained untouched by predators or abominations.
And because he wasn't yet burdened by the dreadstones mission or his future enemies, and hadn't yet experienced the 'comfort' of an inn bed, his stats remained stable. The decreasing of the stats only began on Day 10 after he finally slept at the inn at day 8 and wakes at day 9. That’s when the reality of the situation hit him: His unwillingness to sleep on the ground again after sleeping soundly at the inn, the stress of his next moves in the city, the poor condition of the beasts and the contrasting comfort of the Skrilzi on many places, and I suppose his shit like what happened to Redroot finally caught up with him too.
