what's the latest info on how the home feed algo works? i've been sporadically active lately and find myself scrolling the feed less and less each time. right now it aligns a lot with my interests and activity till date but i feel it leans into the knowns too much and there's very little discovery - of things that i might be interested in. if i know how it works i can control my actions so feed can be curated more effectively - any tips or ideas?