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Why are they so much in demand? The following episode explains why.
The mighty oil refinery suddenly and inexplicably came to a
standstill. The engineers were baffled and the directors were
furious. After several hours of effort to restart the refinery failed, a
consultant was called in.
The consultant went round the silent plant and stopped in front of
a serpentine mass of pipe work and called for a hammer and a ladder. Climbing
up the ladder and looking intently at the pipe work for a few minutes, he
proceeded to give a few firm taps on the pipe work, with the
hammer.
Hey Presto! The refinery was in full stream again.
A week later the consultant sent in his bill for settlement.
It read:
To work with hammer
- £ 5.00
To knowing where to tap -
£ 500.00
Total -
£ 505.00
