He would be sitting up at his dinner table, and we had a wonderful time doing constructive geology and joking. He was in good spirits. He had not given up.

The limits along the highway of the collapse were controlled by what the materials that the highway was sitting on -- in this case, the bay mud. This has nothing to do with the liquefaction problem. This has to do with the shaking problem.

It was a very important, pioneering study.

Doc was an extraordinary person. He was a gentle man and a very nice person -- a very patient, constructive person.

There was a set of apartment buildings that simply tipped over. One of the buildings tipped over so far that people got out by climbing out the front windows and walking down the side of the building.

What's the harm of a little mystification? It sure beats boring statistical analyses.