

This was an interesting read, but it’s only discussing blue light filters as they affect melatonin and thus sleep cycle. It doesn’t say anything about other reasons to use them, which for me are:
- Blue LED light is linked to long term macular degeneration, it may also have negative effects on the retina in the shorter term.[1] It’s not completely clear to me whether these effects would also be basically unhindered by a blue light filter, as the article describes; it gives me no reason to think they would but I’m not a neuroscientist.
- When I’m already using a dark theme with my screen at minimal brightness (as suggested by the article), using a filter lowers the total luminance even further (as suggested by the article).
- It feels less straining on my eyes; maybe that’s purely psychological but hey I’ll take it.
- It’s cozy :3
Given this the article title seems sliiiightly grandiose, but perhaps most people are really only in it for the melatonin thing.







This definition of social media is new to me as well, thanks for sharing it. This sort of clarifies a term I really dislike, and which you’ve used: “the algorithm”. It’s always seemed a little murky to me which algorithms it refers to. It’s like saying “don’t eat food with chemicals in it”.
Lemmy does have “an algorithm”, it’s just a relatively simple one based on communities one is subscribed to plus some vote/comment data for the various sort orderings.
Lemmy also absolutely implements a social graph – the data about who has interacted with who is all stored by the system. It’s not explicitly stored as a graph structure, but then we’re arguing database schemas.
As I understand it, however, you’re saying “social media” arises when the “social graph” data structure is used as an input to “the algorithm”. That seems like a pretty robust definition to me.
One bit of pedantry: user blocks on Lemmy are, by a general definition, a form of social graph, and they do affect what content people see. So Lemmy could technically qualify as social media by the definition I’ve written here. I’m not sure what a more precise definition could be that avoids this technicality.