Hi Tim:

The problem is NOT the cell phone manual
and its warnings, but the microwave oven.

I've just bought "Design of Everyday Things"
by Donald A. Norman.  Norman talks about 
how the product design leads to use 
difficulties and affords misuse.

Your father-in-law needed to dry out the 
phone.  Heating something is a method of 
drying it out.

Any oven would afford a means to heat up the
phone and dry it out.  The microwave oven 
affords a means to heat something up -- 
quickly.

Ipso facto, you father-in-law popped the 
phone into the microwave to dry it out.

Norman would likely point out that your
father-in-law did not distinguish that 
microwave heating is fundamentally different 
than convection heating.  Typical microwave 
oven instructions only hint at this 
difference -- because it rarely makes any 
difference -- except speed -- when heating 
foods.
 
Norman would likely point out that a warning 
in the phone instruction manual is not 
likely to prevent putting the phone in the 
microwave.  Our brains tend to be cluttered 
with such data, and the data gets filed 
somewhere that is difficult if not impossible 
to recall, especially warnings that are 
obscure and useless at the time you read the 
warning.

So, the fault lies with the microwave oven,
not with lack of warnings in the phone
manual.   The fact that we call it a 
"microwave" oven should tell us that it is
fundamentally different than an ordinary 
oven.  If we don't actually use the oven,
but watch someone else use it, we may very
well lose the distinction that the oven 
uses microwaves for heating.


Best regards,
Rich


Richard Nute
Product Safety Consultant
San Diego

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