Gregory: Either way, it implies the presence of intelligence.

Scott: If it wasn't, it occurred "naturally" - that is was constructed through basic physical phenomena.

Probably, but not necessarily. We've already met on our own planet a non-intelligent optimization process that's built gears to "whir rapidly, perfectly meshed", and electricity generators and conductors for both data transmission and delivery of large currents, and surfaces that gleam in bright colours, and even built things using metals.