The system has evolved and adapted, he said, but remains the same in many ways.

Even if this implementation does not take off, the idea is so cool and interesting that a similar system will evolve.

Managed care's full effects aren't yet clear, because the system is evolving.

Nor do they know why such a system would have evolved.

These systems do not evolve over time but are designed with certain abilities from the start.

The system evolved over the past century, as various ideas were tried and discarded.

The system has long since evolved into little more than a one-party state.

What other mission areas that system might evolve to are still open for debate and development.

Within 15 years that system had evolved into a democracy.

Gradually the system of writing music we know today was evolving.