Authors set up alternative ideas that need to be introduced and explored.

Computer simulations at Princeton have now tested an alternative idea: dark matter that is not cold or hot, but warm.

"It's so nice to have a set of alternative ideas to the conventional wisdom."

This is an attempt to loosen up your mind and let it accept alternative ideas.

The equally important task of any opposition is to put forward alternative ideas and policies.

I think when presented with alternative ideas, he can pick the decent idea.

She did not come to Bonn with any alternative ideas.

"We need the arts to help us have alternative ideas," she added.

No support is given to alternative ideas, such as building nuclear power stations.

He has put the onus on the Council to come up with an alternative idea.