Sentence examples for a difficult and subtle from inspiring English sources

It is a difficult and subtle formula to master: casino gaming companies spend millions refining slot machines to exert just the right psychological pull.

Materials selection is a difficult and subtle task, due to the immense number of different available materials.

The working group's task is both difficult and subtle.

Unfortunately, even though Carl is right, he made a small and subtle mistake so difficult to spot that it leaves Carl's justification intact.

Props and thanks to Apple for tackling a very complex and subtle problem that was difficult to explain.

She's a fierce and subtle essayist.

Clinically, identifying subjects in an early phase of developing DCM would be important but it is often difficult and for example subtle abnormalities in echocardiography may easily be overseen.

Subtle, difficult and brave, it represents a powerful statement of artistic honesty in a culture of official lies and evasions.

The early clinical diagnosis of parkinsonian syndromes (PS) is made difficult by subtle and nonspecific presenting symptoms.

But unintentional bias is complex and subtle, making it difficult to quickly eliminate.

1 Increased vascular tortuosity has not been well-described previously in severe falciparum malaria, possibly because the normal appearance of retinal vessels varies significantly between individuals and subtle changes are difficult to identify.