IMO the CD-ROM/Cup holder is abuse whereas metal
fork is a foreseeable misuse (less people uses
plastic fork in a hot toaster).

In my opinion:

1.      Using a CD tray to hold a cup is misuse,
because CD tray is used is to hold a CD.
2.      Bread stuck in a toaster is an abnormal
condition; it is not a fault condition because
there is no fault in the toaster as the toaster
resumes normal operation after removal of the
stuck bread.
3.      Using a fork (metal or plastic) to remove
stuck bread in a toaster is misuse of the fork,
because a fork is used to convey food to the
mouth.
4.      Standing on a chair is misuse of the
chair, because a chair is used for sitting.

Misuse is using the product for some purpose other
than the intended use of the product.

Abuse is subjecting the product (in normal use) to
stresses beyond its specs.

The safety professional cannot foresee misuse
unless he knows 
a)      what the other person wants to do and 
b)      how the product can be used (misused) to
help accomplish the goal.

If one needs a handy place to set a cup, and the
CD tray is handy and will hold the cup, then
misuse is possible.  What makes the story fun,
none of us would have chosen the CD tray as the
place to put a cup.  Predicting what another
person wants to do in a given situation -
foreseeing -- is difficult or impossible.  


Best regards,
Rich




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