People generally tend to have 2 ethical systems they follow either explicitly or implicitly without even knowing:

• Small scale like personal, immediate family and small community ethics.
• Large scale like direction of government or large community ethics.

There are many ethical schools of though and here’s a quick brief (very simplified):

Small scale ethics:

• Virtue ethics - cultivate good character, be just, honest, wise etc.
• Care ethics - all about close community and relationship building, your people first
• Deontological ethics - focus on rules and duties, never lie etc
• Egoism - me me me, I only have one life and that’s the most important thing.
• Existencialism - take full responsibility of your choices and persona, create your own meaning as it’s fit now.

And for large scale:

• Utilitarianism - the most common position. Greatest good for greatest amount of people. Save as many as you can by pulling the trolley switch
• Contractualism - society must be organized around rules we all agree on without knowing our place in it. i.e. poor and king have to agree without knowing who they are yet.
• Deontological Priority - free speech, bodily autonomy etc. All fundamental rights must be protected even when inconvenient.
• Communitarianism - focus on community, tradition over individual rights and freedoms
• Libertarianism - maximize individual liberty
• Marxist - prioritize equality and collective ownership
• Environmental - prioritize protecting our surroundings and all life even non human. Challenge human-centered ethics.

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Most commonly people fall virtue or deontological at small scale and utilitarian or deontological at large scale without even knowing much about ethics. What about you?