The article asserts that heavy containers placed on top are more likely to be flung into the sea. Is that really true? What if it was actually better to load he

The article asserts that heavy containers placed on top are more likely to be flung into the sea. Is that really true? What if it was actually better to load heavy containers on top? Or heavy containers around the edges with lighter ones in the middle. More valuable cargo in the middle? What is the optimal shipping container arrangement? Do shippers have software that tells them where to place the containers or is it more or less random?