Sentence examples for concerning valid from inspiring English sources

What do the mathematical results reported below have to do with the original philosophical issues concerning valid reasoning?

She considers Yugoslavia's concerns valid, senior American officials said, and promised a renewed effort to keep the border secure.

These findings introduce valid questions concerning dosage.

Pickering has made several important and valid points concerning experiment.

These concerns are valid.

Those concerns remain valid.

"Much of this concern is valid.

Both concerns are valid, but they can easily be reconciled.

"But I know his fears and concerns are valid.

Robert S. Mueller III, the bureau's director, said he found "many of the concerns are valid".

"All they heard was 'change, change, change'," says Motsinger, acknowledging that some concerns were valid.