When you are piling things on top of each other, by nature you will have a pyramid shape. Your mass will be bigger at the bottom, smaller than what you have up higher. When you have wave action, if it is going close to the top, it will start working its way through the structure, which can erode it and create a failure.

It was fast - it happened in a matter of hours. But it probably was a gradual degradation of your structural system. You started increasing the pressure. For a concrete all, it could be cracks growing, water finding its way through crack. That increases rate of growth of the cracks. Add that to your possible sheet piling failure. It just keeps progressing through the structure.

You can't really describe what you're feeling when you score a goal like that. It was a beautiful moment.

If you have a foundation that has given in to water pressure, not only are you allowing the structure to slide, you are changing the way it's carrying the load. It changes its ability to take the force. All the force has to be transmitted sideways to the other points on the base where the structure is still working.

I have a deep fascination with human nature, with all its virtues and all its defects.

It looks more likely that we will be in the upper end of the range.