The period leading up to the domestication of cereals was one of erratic climate change, as the last ice age ended.

ECONOMIST: The earliest granaries

It won't be a dramatic sudden change but a long, slow, erratic climb out of the freeze.

BBC: Schools open for exams as freeze eases in parts of UK

Because of the erratic nature of hurricane movement, long-range forecasts often change.

CNN: Katrina hits Florida: 3 dead; 1 million in dark

After an erratic start from Jerome Taylor, Vasbert Drakes came on first-change to dismiss Marvan Atapattu for 15, fishing outside off-stump for Gayle to collect.

BBC: Edwards stuns Sri Lanka