One thing leads to a deeper thing, and that leads deeper yet, until an argument that started over what size plates are best used at lunchtime turns into a no-holds-barred war about whether the marriage in question would be better dissolved. And there is certainly fear of falling down a hole of that size (again, particularly when much has remained unspoken) that motivates the proclivity to keep things to yourself when they would be better, but dangerously, said.
