"Rich Lemert" wrote in message
ink.net...
While temperature may play a role in altimeter "errors" I believe
it's extraneous to the discussion at hand.

Why would you believe that? People can and do use that very same mnemonic
to remember the effect of temperature on the altimeter indication.

To pretend otherwise is silly. It happens, and so given that it happens, it
makes perfect sense to explain the error and why the phrase fits (albeit
imperfectly, AS I ALREADY POINTED OUT, before the post that claimed
temperature was irrelevant).

The phrase in question says nothing about why the pressure is changing,

The phrase in question says nothing about pressure at all. The word
pressure is not even used.

only that it does.

The only thing the phrase say that anything "does", is that the altimeter
reads too high in certain circumstances.

The
effect of this pressure change on altimeter readings can - and has
been - adequately explained without discussion of temperature.

The effect of this temperature change on altimeter readings can - and has
been -adequately explained without discussion of temperature.

We can always discuss temperature effects once the pressure effects
are understood. Trying to get someone to grasp two separate concepts at
the same time when it's not necessary does only serve to confuse the
student.

As long as the exact same phrase gets used for two different concepts, you
are stuck teaching two different concepts at the same time.

Now, maybe that really means people ought to stop using the mnemonic. But
you and I have no control over it. Pretending that temperature is
irrelevant is dumb, and is likely to get someone killed.

Pete