1st edition:14 July,2002

Solution By Complementary event

1. Scope

This provides a solution of a problem of everyday life and business.

2. Theory of solving

Cause is within complementary event of sufficient conditions which are satisfactory solutions of complementary event of the problem. Because if a cause is one of the sufficient conditions which are satisfactory solutions of complementary event of the problem,it will lead you to complementary event of the problem.

3. How to use

Write a problem to the lower right in a table.(See Table.a1)
Write complementary event of the problem to the upper right in the table.(See Table.a2)
Think sufficient conditions which are satisfactory solutions of complementary event of the problem. Write the solutions to the upper left in the table.(See Table.a3)
Write complementary event of the solutions to the lower left in the table. You will realize causes in complementary event of the solutions.(See Table.a4)
Try again the above 1-4 steps for the causes.

Table.a1

?	->	?
?	->	A problem

Table.a2

?	->	Complementary event of the problem
?	->	A problem

Table.a3

Satisfactory solutions of complementary event of the problem	->	Complementary event of the problem
?	->	A problem

Table.a4

Satisfactory solutions of complementary event of the problem	->	Complementary event of the problem
Complementary event of the solutions	->	A problem

4. Example

Table.b1

?	->	?
?	->	The statue of Liberty is soiled by bird droppings.

Table.b2

?	->	The statue of Liberty is not soiled by bird droppings.
?	->	The statue of Liberty is soiled by bird droppings.

Table.b3

a)There is no bird.	->	The statue of Liberty is not soiled by bird droppings.
?	->	The statue of Liberty is soiled by bird droppings.

Table.b4

a)There is no bird.	->	The statue of Liberty is not soiled by bird droppings.
a)There are some birds.	->	The statue of Liberty is soiled by bird droppings.

Table.b5

?	->	?
?	->	There are some birds.

Table.b6

?	->	There is no bird.
?	->	There are some birds.

Table.b7

There is no food of bird and no place for nest and no place for rest.	->	There is no bird.
?	->	There are some birds.

Table.b8

There is no food of bird and no place for nest and no place for rest.	->	There is no bird.
a)food of bird b)place for nest c)place for rest	->	There are some birds.

*A result of investigation showed the cause of the problem is some insects which are around the statue of Liberty.

Table.b9

?	->	?
?	->	There are some insects.

Table.b10

?	->	There is no insect.
?	->	There are some insects.

Table.b11

There is no food of insect and no place for nest and no place for rest and no light which the insects like.	->	There is no insect.
?	->	There are some insects.

Table.b12

There is no food of insect and no place for nest and no place for rest and no light which the insects like.	->	There is no insect.
a)food of insect b)place for nest c)place for rest d)light which the insects like	->	There are some insects.

*A result of investigation showed the cause of the problem is light which the insects like. But lights are needed to show up the statue of Liberty.

Table.b13

?	->	?
?	->	Lights draw some insects.

Table.b14

?	->	Lights do not draw the insects.
?	->	Lights draw some insects.

Table.b15

Lights do not have strength or a wavelength which the insects like.	->	Lights do not draw the insects.
?	->	Lights draw some insects.

Table.b16

Lights do not have strength or a wavelength which the insects like.	->	Lights do not draw the insects.
a)strength of light which the insects like b)a wavelength which the insects like	->	Lights draw some insects.

*A result of investigation showed the lights have a wavelength which the insects like. The solution of the problem is use of lights which do not have the wavelength which the insects like.

Caution

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