> Their algorithm is a chronological feed

Why does a chronological feed get considered and algo? Do we consider SQL queries with WHERE and ORDER BY clauses an algo now?

https://en.m.wikipedia.org/wiki/Algorithm

> In mathematics and computer science, an algorithm is a finite sequence of mathematically rigorous instructions, typically used to solve a class of specific problems or to perform a computation.

Looks good to me.

And did you just question "WHERE" and "ORDER BY" in SQL? I wouldn't do that. There are probably a ton of algorithms and optimizations done there. In my very naive understanding, quick sort is at least worth something.

What else could it possibly be?

It absolutely is. Sure it's the default, but it's the default to measure against and beat. It's like comparing ML algos against the average prediction, or forecasts against the previous known value.

fun sum(x, y) { return x + y }

Congratulations, you have yourself an algorithm.

I mean, it's all just quicksort under the hood, right? By extension...

I mean, it's all just quicksort under the hood, right? By extension...