1.   Although challenged, this remains the most convincing explanation.

2.   Despite much research we can not even today offer a convincing explanation.

3.   The first point to note is that no-one has a convincing explanation for the existence of W-cells.

4.   There is a more convincing explanation, however.

5.   What need to import further obscure perplexities into an already complex situation - particularly when simpler and convincing explanations lay to hand?

6.   There is no convincing explanation of the overall structure of the universe.

7.   There is a convincing explanation for this pattern.

8.   At the end of the day, the public choice school may offer a more convincing explanation for the choice of redistributive instrument.