tailcalled comments on Science in a High-Dimensional World

[tailcalled]

Or should this more be understood in a nested sense?

That is, if you’ve got $Y_{00}$, $Y_{01}$, $Y_{10}$, $Y_{11}$, … then you can form $Y_{g0}$, $Y_{g1}$, …, and if $Y_{gi}$ is then deterministically predictable from $X_i$, you know you’re onto something?