"Most urban systems," Crew says, "have demonstrated the capacity to reform single schools in individual communities."

The system did demonstrate to be successful at the 1938 World Cup.

The second incompleteness theorem, an extension of the first, shows that such a system cannot demonstrate its own consistency.

The system has demonstrated its ability to defeat multiple threat types by defeating two simultaneous threats.

"The democratic system has once again demonstrated its value and the validity of its rules," he added.

"The system that I saw demonstrated two or three years ago, a lot of the time it couldn't differentiate between a man and a woman."

Already the Indonesian multi-party system was demonstrating its inherent weakness.

Many complex natural and man-made systems can demonstrate metastability.

The new system must demonstrate greater simplicity, transparency and flexibility than its predecessor.

Under certain conditions these systems can also demonstrate chaotic motion.