private PrgPopulation Create()
        {
            EncogProgramContext context = new EncogProgramContext();
            context.DefineVariable("x");
            StandardExtensions.CreateAll(context);
            PrgPopulation pop = new PrgPopulation(context, 10);
            EncogProgram prg1 = new EncogProgram(context);
            EncogProgram prg2 = new EncogProgram(context);
            prg1.CompileExpression("x+1");
            prg2.CompileExpression("(x+5)/2");

            ISpecies defaultSpecies = pop.CreateSpecies();
            defaultSpecies.Add(prg1);
            defaultSpecies.Add(prg2);
            return pop;
        }