Clear answers are less obvious than the need for careful research.

Below are the benefits for which there is some evidence, though usually from common experience rather than careful research.

This latest Government report is by all accounts based on careful research.

And if they conclude, after careful research, that there is no such thing?

With careful research your budget might cover about 4 days accommodation - what are you going to do for the rest of the time?

However, this idea was from stories he had heard, not careful research.

But she discovered opportunities through her careful research, and they paid off.

However, Suetonius wrote that his careful research failed to support this story.

However, careful research has shown that this was first reported in 1952.

Before any such visit she would carry out careful research.