Inaction is still a choice
Where a person recognises several options and deliberately refuses to act, doing nothing is one selected course among them.
Duties depend upon relationship and capacity
Parents, professionals, officials and witnesses may carry stronger duties than strangers because of their role, knowledge or ability to help.
Not every failure to help is equally blameworthy
People have limited time, money and power. Morality cannot require one person to prevent every harm in the world.
Low-cost prevention creates stronger duties
When serious harm can be prevented with little risk or sacrifice, refusing to help becomes more difficult to defend.
Inaction can support existing power
Silence may allow abuse, discrimination or corruption to continue, particularly when many people each assume someone else will act.
Intervention can also cause harm
Acting without knowledge, consent or competence can worsen a situation. Responsible action includes considering whether help will actually help.
Evidence notes
Evaluation should consider knowledge, capacity, role, cost, risk, foreseeability, available alternatives and whether intervention was likely to reduce harm.
Ethical questions
When does silence become complicity?
How much personal cost must be accepted to prevent serious harm?
Can poorly informed intervention be less moral than restraint?
Conclusion
Doing nothing can be a moral decision because inaction has foreseeable consequences. Responsibility depends upon what the person knew, what they could reasonably do and what risks action or inaction created.