Is 10,000 people suffering identically equal bad as one of them?

[Edwardo Piet]

I think she is saying that one individual can be a more important assessment for the well-being of the majority than the majority itself because there may be an individual who if you neglect their well-being they end up causing more harm to the majority than if you focused on the majority. But I would respond to that with: "But in the long run then that is still the well-being of the majority you are focusing on."

I personally don't care about the sum total well-being of all individual living things because not a single individual living thing actually experiences it. It's a fantasy. See my new sig