Board Thread:General Discussion/@comment-28777918-20160618024323/@comment-27620479-20160618125159

My problem with this theory is that, like all similar ones I've seen before, it fails to account for why doesn't Sans treat the protagonist as a human child.

He judges them according to adult level morality, as if it could be expected from a child to consider the result of their action, not their intention. They are probably not old enough to be capable of it under normal circumstances, let alone under extreme pressure. He doesn't try to provide guidance, doesn't tell his expectations in advance, and does this like he was the epitome of responsibility, or it was his job.

He doesn't care about their well-being. He just lets them wander around in hostile territory without guidance or supervision, even though he promised to keep them safe. He is cold to them multiple times, even if they did nothing wrong.

If they are totally awful, he talks to them about the timespace continuum, even though, as a "former human", he should know that they are barely-, or not at all into physics yet. Still, he expects them to comprehend his words in the middle of fighting for their lives. He calls them an anomaly who should be burning in hell and offers false truce, two foolproof ways to push emotionally unstable kids deeper down their personal abyss.