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Will I notice anything as a user?
It's pretty subtle. Aspiration wise, ranking should be more representative of what everyone wants to see.
Will I notice anything as a territory owner?
Your territories should have ranking more representative of what you and people in your territory want to see.
Should territory owners be doing something regarding these changes?
No. Normal engagement and zapping should be enough. In your territories, you just have a little more tone-setting influence through your zaps.
Will it end world hunger?
Yes, once everyone is on stacker news earning sats.