# Can an arbitrary circuit be represented using two commands (qsel package)?

I was watching this entertaining video by David Bacon (as in "Bacon-Shor code", Cirq, ...) : video of talk where he mentions the package he wrote:

(qsel), that describes simulating quantum circuits using two commands : "entanglement" and "superposition".

This seems bizarre. There's no documentation on how to start with a circuit and end up in a sequence of such commands. Is anyone familiar with the package or the underlying idea?