When I hear my two little people (2 and 15 months) arguing, fussing, yelling, etc. at each other in the play room, should I go investigate and discipline whoever is in the wrong (if one sibling yanked something from the other) or should I discipline them both or should I ignore them and let them fight things out? Normally the issue is one has a toy or book the other one wants. They need to learn to share and I’ve told them that but I’m not sure how to get that concept to “click” in their minds. What do you suggest?