14. Final Thought It has been observed many times that a new technology evolves in two stages. In the First stage it evolves previous practice. Early automobiles were known explicitly as Horseless carriages, and only later did we get motor coaches, transports and Interstate highways. Stephen Downes, The Buntine Oration 2004
15. Thanks a lot José Antônio da Silva [email_address] / [email_address] http://joseantoniook.wordpress.com