[tremon]

I don't think that's an accurate metaphor. Seatbelts are expressly a runtime solution to car crashes, whereas Python's type checking is a) only done during development (not even during build), and b) completely reliant on third-party tools.

If you're looking for a car analogy, I would suggest comparing Python type checking to installing speed cameras on the factory floor.

[ObscureScience]

The analogy would be mandatory inspections of certain components or manufacturing processes to see that rules and specs are followed while assembling.