On Oct 25, 8:08*am, "HeyBub" wrote:

Correlation does not imply causation.

Ummm, yes, it does. Correlation does not establish absolute
causation, but it certainly implies a link.

Half the defective smoke detectors
being over ten years old may be due to other causes:

* They came from dirty homes and the dust-bunnies interfered with proper
operation. It's a fact that half the homes in America are dirtier than the
median.

This is true.

* Ten years ago, there was a big influx of Chinese smoke detector circuitry
made with Melamine.

This is an attempt at a joke.

* ALL of the failed smoke detectors had their batteries removed to eliminate
the nagging chirp.

This is nonsense.

It's poor practice to make decisions based on assumptions about cause and
effect.

If one gets exercised over the "ten year = failure" business, here's an even
more shocking revelation: Virtually ALL of the failed smoke detectors were
colored white!

Beware.

If you don't have any information to add, you shouldn't.

R