Following on from the idea of Vibrational Groups is the idea of optimizing variables. This means that even small details are important in themselves. They are even more important as they may have an accumulative effect. A little evil is still evil. That is why one should be compassionate towards even insects etc. One small action can move you from one major vibrational group into another. One small action can save you from many negative effects and put you in contact with positive forces.
If creating a healing environment then as many variables as possible should be optimized. For example temprature, humidity, colour, materials used, size and shape + many more.
The architects of such a healing space must build up an awareness of each seemingly insignificant variable, it's effects and interactions with other variables, recognizing that some effects will be specific to particular condtitions.