Hodgson is right when he says the difference between the various systems is marginal and that too much is made of it sometimes.
(A technical note: the DW-Nominate scores, which are based on Congressional voting records, are used as the common denominator between the various systems.
In some schemes, users also need a special viewer or player program that is deemed to be secure meaning, for example, that the printing function is disabled if a particular user's rights do not include printing.There are other differences between the various systems on offer.
Generally, many open questions remain about the interactions between the various systems and about their evolution, in particular the evolution of social learning and the evolution of language.
Although there is some degree of common behaviour between the various systems, the range of physical properties is so high that each system must be considered separately.
To facilitate this there needs to be a middle layer or conversational run-time between the various systems and data sets in an organization so an end user can quickly and easily do their job without having to open a new app or piece of software.
Molecular biology chiefly concerns itself with understanding the interactions between the various systems of a cell, including the interrelationship of DNA, RNA, and protein synthesis and learning how these interactions are regulated.
The differences observed between the various systems studied could be due to differences in oncoproteins, cdk2 inhibitors, cell type, or anti-proliferative signals (serum starvation versus antiestrogen treatment) employed.
For example, one can study correlations between the various systems biological and evolutionary properties of genes [ 280].
