The second section presents the views andassumptions of realism in conducting research in social science. The main realistic attacks onlogical positivism approach are presented in the third section and the conclusion is given in thefourth section.
Water is considered 'the' universal solvent because more materials are dissolved by it than by any other solvent but it will not dissolve non-polar substances like oil.
Water is a great solvent for hydrophilic molecules but hydrophobic molecules are, by definition, not easily disturbed by water. This makes a clear exception to the Universal Solvent idea. I haven't read any literature claiming it to actually be the best solvent, but it does work well in many chemical situations.