> thus it remains obscure. Hyperbolic growth hits the limits (electricity? intractable problems?) the same way exponential growth does.

Indeed, exponential or larger than exponential growth in nature is always the beginning of a S curve. The article cites

> Moore's Law was exponential. We are no longer on Moore's Law.

This will also happen with super-exponential growth. A literal singularity won't happen - it will inevitably exhaust resources and will slow down.