EXPERIMENTATION
OBSERVATION
CONCLUSIONS
HYPOTHESIS
EVALUATION
CONTROLLED
CUMULATIVE
PREDICTIVE
VERIFIABLE
DEDUCTIVE
INDUCTIVE
ORIGINAL
PROBLEM
O
P
U
D
X
X
H
O
I
I
M
O
R
I
G
I
N
A
L
I
U
R
U
S
X
T
C
O
N
C
L
U
S
I
O
N
S
N
T
A
Q
H
V
E
R
I
F
I
A
B
L
E
I
E
H
E
Z
O
I
I
H
E
S
A
Y
J
Z
J
R
N
I
U
X
A
U
B
O
I
A
D
V
A
I
C
T
R
O
J
M
I
U
Y
I
E
O
E
B
T
M
U
L
C
S
R
B
U
E
A
I
F
C
O
N
V
O
V
S
A
Q
A
I
D
E
I
K
E
V
I
O
M
P
S
D
I
D
A
E
T
H
P
C
R
H
I
E
T
I
D
K
E
R
J
U
T
N
L
R
N
C
Z
V
U
T
B
I
U
T
C
C
L
E
O
C
A
T
U
V
E
U
I
O
U
O
W
U
E
C
N
C
B
D
U
T
L
T
A
A
M
O
O
T
E
P
X
Y
D
U
F
Q
O
I
U
I
U
P
T
T
I
H
I
L
O
Y
V
P
E
D
J
O
R
C
J
V
M
F
I
I
R
M
E
K
I
H
X
G
A
E
J
Z
P
T
Q
E
U
E
O
O
E
U
O
U
U
D
A
M
I
D
A
S
E
I
L
I
C
U
N
N
P
O
I
L
M
E
U
U
K
G
A
L
A
V
Y
E
Y
G
U
J
X
Y
N
Z
Q
B
U
I
V
N
O
G
J
E
I
H
O
Q
E
V
E
B
W
A
Z
K
I
T
N
T
E
C
O
N
T
R
O
L
L
E
D
A
E
P
B
W
R
B
U
N
S
E
A
A
W
W
O
O
E
N
E
X
Y
I
T
E
E
U
O
Z
S
H
O
C
I
Q
N
O
A
O
T
B
G
Q
I
I
A
C
V
H
I
Z
X
O
Z
L
A
D
I
B
O
D
O
