This machine is subject to breakdown during periods of critical need.

A special circuit in the machine called a "critical detector" senses the operator's emotional state in terms of how desperate he or she is to use this machine. The "critical detector" then creates a malfunction proportional to the desperation of the operator. Threatening the machine with violence will only aggravate the situation. Likewise, attempts to use another machine may cause it to also malfunction. (They belong to the same union.) Keep cool and say nice things to the machine. Nothing else seems to work. Never let anything mechanical know you are in a hurry.