I have quite rightly been asked to provide a Summary for my Study "The Tower of sand". At the same time I fixed a few typos. Adding the Summary means that the Study is now "Version 2.0", available at:
http://www.jwstudies.com/The_Tower_of_sand.pdf
The Summary is available as a separate document at:
http://www.jwstudies.com/Summary__The_Tower_of_sand.pdf
Doug