It is argued that these developing methods are important as, without having a clear understanding of the assumptions underlying an intervention and how it is supposed to work, evaluators cannot ascertain whether it did work and why it did or did not achieve the intended benefits [ 9].
But that by itself does not tell us whether the predicate 'true' applies to cases where we cannot ascertain that it does.
Our study therefore cannot ascertain causality, and consequently it is not possible to establish whether the correlation estimated constitutes a real risk factor and a biological plausibility to epidemiological observations.
Particularly, because the denominator data (numbers of travellers) cannot be ascertained, it is not possible to calculate incidence rates.
Although the scientific method will eventually converge to something as a limit, nevertheless at any temporal point in the process of scientific inquiry we are only at a provisional stage of it and cannot ascertain how far off we may be from the limit to which we are somehow converging.
Due to the cross-sectional design, we cannot ascertain the direction of association; it is equally possible that increased levels of thrombotic markers causes decreased eGFR, or that decreased eGFR causes the elevated markers.
While we cannot ascertain whether this indicates concurrent use, it certainly raises the issue of possible interactions with SJW.
While we cannot ascertain what represents the ancestral state, it is tempting to speculate that a broader mRNA degradation pathway preceded the development of the more specialized splicing mechanism.
We cannot ascertain exactly when this apoptosis occurs, whether it is during the later stages of the cell cycle or upon exiting cell cycle and initiating a neuronal differentiation program.
Is it true that if we can't know what the (whole) truth of some matter is, we also cannot ascertain whether or not we are making progress towards it?
It should be noted, though, that we cannot ascertain that the 18S sequences of A. epiroticus, A. sinensis and A. stephensi are complete, possibly missing a few bases at their 3′ end.
