Table 4.

TRF as a simple peptide.

T = TRF consists of the three peptides glu, his, and pro
~T = TRF consists mainly of non-peptide material
E1 = chemical tests showed TRF contains three amino acids: glu, his, and pro in equal amounts
E2 = only a fraction (8–30%) of the purified TRF material was found to consist of peptides
E3 = proteases were not able to completely degrade the purified material
E4 = synthetic combinations of the three peptides did not show TRF activity
Probability	Value	Code	Description
P(T)=	0.63		Posterior of initial clues on structure (from Table 3)
P(~T)=	0.37		1—prior
P(E1|T)=	0.7	SC	Peptide chemistry is strongly consistent with TRF being a simple peptide consisting of 3 amino acids glu, his and pro
P(E1|~T)=	0.4	WI	The presence of peptides in TRF is weakly inconsistent with the non-peptidic nature of TRF
P(E2|T)=	0.3	SI	A majority of TRF being non-peptidic by weight is strongly inconsistent with its being a simple peptide
P(E2|~T)=	0.7	SC	The dominance of the non-peptide portion of TRF is strongly consistent with its not being a simple peptide
P(E3|T)=	0.3	SI	The failure of protease enzymes to completely degrade TRF is strongly inconsistent with its being a simple peptide
P(E3|~T)=	0.7	SC	The failure to completely degrade TRF is strongly consistent with its non-peptide nature
P(E4|T)=	0.3	SI	The absence of activity of synthetic combinations of the three amino is strongly inconsistent with TRF as a simple peptide
P(E4|~T)=	0.7	SC	The non-peptide nature of TRF is strongly consistent with the inactivity of combinations of three amino acids
P(T|E1-E4)=	0.19	Disconfirm

In the body of the table prior and posterior probabilities are shaded in yellow. Conditional probabilities are shaded green for the theory being tested and pink for the alternative. Bolded words in the Description column indicate the relationship between the theory and evidence in accord with the abbreviations in the Code column.