However, the very acceptance of such word-images opens up numerous explanatory possibilities.
In an open systems world, there is no end to the explanatory possibilities and role of other mechanisms that can be put forth and tested.
The Tree based model is more efficient in dealing with missing values and given that the two approaches identify a nearly identical subset of useful explanatory variables, the possibility that the missing values are having an undue influence on the final regression model is remote.
Motivated by the results of the regression analysis, we investigated the impact of the explanatory variables for the possibility to identify candidate loci for selective sweeps.
Although a number of factors were shown to affect sickness certification, we cannot exclude the possibility that other explanatory factors may have been involved which were not studied here.
Another important problem related to the PSR is the possibility of self-explanatory facts and self-caused entities; particularly, one may wonder how these are distinguished from unexplainable, brute facts and uncaused entities.
We control for this possibility by explicitly considering all possible explanatory eQTL in the full sequence data available for our replication sample.
It also raises other interesting questions concerning such matters as the explanatory relevance of content and the possibility of a priori self-knowledge.
Does it offer the possibility of comparing the explanatory value of alternative theories?
We considered the possibility of interaction between some explanatory variables and sex, because of the marked sex differences in their distribution and introduced interaction parameters into the regression models to test for interaction formally using the likelihood ratio test.
