Why YSK: Service Dog etiquette is to leave them alone as to not distract the dog’s focus. If they’re approaching you, they could be using a last ditch effort to save their owner. They will usually follow you, whine, bark, or otherwise try to grab your attention if this is the case.
Sorry I’m not a parent so I don’t know about these things, but for what does it help to put a baby alone in a dark room?
I would probably be paranoid that it develops some random issues from stuff like that and carries to adult life but maybe that’s just some hippie bullshit.