A much-studied property of individual hippocampal neurons in rats is their striking ability to hone activity to certain places – known as place-cell firing.

That's because "measuring ... firing at the level of a single cell, a neuron, is difficult to extend to human behavior, which is highly complex."

In this way, the inner table is an element of the outer table's cell, and the onRender events of the table, detail row and cell are firing before the inner table does.