There were some very subtle issues, but they got it.

However, as with any survey there are a number of subtle issues that must be taken into account when interpreting the results.

There is, however, another subtler issue and it has to do with Carter's religious focus.

Brief as the book is, it tackles a number of subtle and complex issues.

But these experts say the team's reaction highlights a much more subtle issue.

It will be a long time before the courts are asked to decide such a subtle issue.

But there are also subtler issues of potentially greater importance.

This is one of the subtlest issues in the book.

A subtle issue is exactly when a name enters and exits scope.

But in subtle issues like these there's never enough dope.