puzzle over

Yet still she puzzled over this man, whose life she never knew but for fragments of memory and family lore.

Policymakers are starting to puzzle over how to regulate artificial intelligence in healthcare — and likely to mess it up, the AI industry thinks.

I have for years puzzled over the idea that a “debate prep” is necessary for any Democrat facing Donald Trump before a live television audience.

But the people with the power to free him keep puzzling over his crimes, demanding explanations, psychological insight, the thinnest ray of sunlight on his motivations.

The episode prompted angst inside NBC News, where journalists and producers on Wednesday were still puzzling over their bosses’ handling of the situation, according to several people who requested anonymity to discuss private discussions.