Synchronization of virtual and physical worlds

Kiran,
In general, That is Croquet was actualy built for,not? and so, you could achive everything what you want, just by programming in it's philosophy definitely.
But a fundamental question is located in a proper understanding of what is 'physical' and what is 'virtual'? and where is the border?
For today, nobody could give the right and clear answer on it.
So, may be, this book will be interesting. By David Deutsch, THE FABRIC OF REALITY (Allen Lane, The Penguin Press, 1997)
[Review is accessible at <a href="http://naturalscience.com/ns/books/book02.html" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> http://naturalscience.com/ns/books/book02.html].

Nikolay