1.   Actually, neither is a reliable guide.

2.   For there, waiting on the platform, would be our ever reliable guide, philosopher and friend, Sam Davies.

3.   In the history of science, beauty has proved itself a reliable guide to truth.

4.   That is why they are a more reliable guide to completeness.

5.   The only reliable guide to that is the demand at present.

6.   The polls are not a reliable guide of how people will vote.

7.   The report acknowledges that research on animals is not always a reliable guide when it comes to humans.

8.   Thus, reflux symptoms reflect poorly prolonged exposure of the oesophagus to acid and are not a reliable guide to acid injury of the oesophagus in PSS.

9.   As a result, although he is our major narrative source for the period, he is not a reliable guide to the opening decades of the Merovingian kingdom.

10.   Independent certificates awarded by the FSC will provide a reliable guide for consumers.