If energy use grows too fast, renewable energy development will chase a receding target.
He took match figures of 12/99, including 6/46 in the second innings as England collapsed chasing a target of 168.
West Indies chased a revised target of 238 off 47 overs for the victory.
England were in a strong position at the end with South Africa struggling on 90-5, chasing a target of 293.
And employment is chasing a moving target: it must rise by about 140,000 a month just to keep up with a growing population.
Australia set a world record in successfully chasing a target of 404 to win the match by seven wickets and secure the series.
The pack in full pursuit can be pretty ugly, though on this occasion it was chasing a legitimate target.
They then won the match by chasing a target of 297 runs in their second innings.
This left Australia chasing a target of 122 in the last two hours on the final day.
Meanwhile, employment is chasing a moving target because the working-age population continues to grow.
