What is a list / array — CCA-F Exam Prep

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Real person
A surgeon in scrubs reviewing a laminated checklist clipped to a clipboard. Operating room in the background, bright surgical lights. The checklist has 19 numbered items with checkboxes. Focused, serious mood.

A surgeon's pre-flight checklist. 19 items. In order.

Skip one, someone dies. In 2007, Dr. Atul Gawande studied surgical checklists across 8 hospitals in 8 countries. 7,688 patients. The checklist had 19 items in a specific order: confirm patient identity, mark the surgical site, check allergies, verify blood supply.

Complications dropped 36%. Deaths dropped 47%. Not because surgeons learned new skills. Because they followed the list. In order.

Lists aren't just organization. Lists are survival.