To overcome this difficulty, statistical hypothesis tests were implemented to detect if the generated soft exposure data are significantly close to the BME exposure estimates.
A major difficulty with this hypothesis, among various other problems, is that atomic masses 5 and 8 are unstable, and there is no known way to build heavier nuclei by successive neutron capture.
The scheme is simple and intuitive, and makes use of polynomial reductions and zero-knowledge proofs, based on the difficulty of factorization hypothesis.
One difficulty with this hypothesis is how such a noncomplementary region would be replicated.
A difficulty with this hypothesis is how the nuclear pores and mRNA, protein, and metabolite transfer and control mechanisms required for nuclear function evolved.
Our analysis shows that there is a evidence of gene replacement within a cluster and within an operon and this presents a difficulty with the hypothesis that operons exist in order to facilitate their transfer as a group.
One of us (JPC), in his description of the new genus Archeterokrohnia Casanova, 1986 [ 46], hypothesized possible relationships with molluscs and wrote (p. 193, English translation): " the main difficulty [of this hypothesis] seems to lie in the fact that chaetognaths have a deuterostomian type of development while molluscs are protostomian" (chaetognaths were then said to be deuterostomes).
Given the importance of oxytocin in modulating social behaviors, it was proposed that dysfunction of oxytocin signaling pathway underlies autism spectrum disorder (ASD)—a severe early-onset neurodevelopmental disorder characterized by social impairments and communication difficulties.3,4 This hypothesis has been supported by an accumulating body of evidence from animal and human studies.
Similarly C is more general than D. Figure 7 Difficulty in ordering hypotheses of different types.
This lack of exclusivity, and the difficulty of grounding hypotheses in data, impedes progress [ 37].
