A checklist is a tool for thinking, not a substitute for thinking.
Pilots report a dangerous pattern: some crew members focus on checking boxes rather than understanding what each checkpoint means.
Ticking "fuel gauge reads normal" is worthless if you don't actually look at the gauge and comprehend the reading.
The goal isn't to complete the checklist. The goal is to verify the conditions the checklist is designed to ensure.
If something seems wrong but technically passes a check, stop and investigate. Your checklist might be incomplete or the item might need refinement.
Use intelligence and judgment when applying checklists. They guide your attention, but your brain still does the work.
References
Scriven, M. (2000). The logic and methodology of checklists.