Slot: data

Analysis, statistics, machine learning.

A product is a set of slots to fill: browser, server, database, deploy. A language fills some of them well, some badly, some not at all. A stack is one pick per slot.

browser server database systems mobile cli scripts data compute embedded wasm config games

Who fits

Language	Fit
Python	●●● strong	NumPy and the scientific stack built on it.
SQL	●●● strong	DuckDB embeds SQL in a host process and integrates with Python and R.
Rust	●●○ ok	Mostly as the fast core under Python tools (Polars, Ruff).
Go	●●○ ok
Java	●●○ ok	Apache Hadoop is implemented in Java, though jobs can be written in other languages.
PHP	●○○ weak
Ruby	●○○ weak	Python dominates data work.