From the Greeks, the two major approaches to this problem were proposed: monism and dualism.

This more elitist approach to governance effectively proposed two tiers of citizenship.

A thermodynamical approach to the high energy collisions first proposed by E. Fermi.

The approach proposed was not only futile, but involved us in a deadly danger.

The approach also proposes that data is published as Linked Data.

Concrete knowledge approach- This approach proposes that during the learning stage participants learn specific examples of strings and store them in their memory.

This approach proposes that a person will rely on concrete knowledge when they can.

This approach proposes the use of biological microorganisms, like the bacterium Escherichia coli.

Having said that, it has to be admitted that the approaches proposed by the Commission are worth considering.

Another approach proposed was the outfitting of ordinary freighters as commerce raiders and, initially, minelayers.