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This term implies that people , like all good capital resources , can be engineered into efficient behavior . Whatever opinion we hold respecting the fundamental identity or diversity of matter and mind , in any case the distinction between mental and physical facts , between the internal and the external world , will always remain as a matter of classification ; and in that classification , sensations , like all other feelings , must be ranked as mental phenomena . First you need to identify the proper scale and ask the right questions : it does n't help to understand the functioning of a virus to know that its fundamental constituents , like all matter , are the elementary particles of physics , quarks and leptons . Therefore blind people , like all citizens , can no longer routinely ask for additional money for separate programs . Fruit production takes a tremendous amount of energy , and tomato plants , like all plants , get that energy from the sun . " The new findings , like all discoveries , need follow - up with further observations and study , but this is a really exciting and useful result , " added Dr. Richard Mushotzky , a senior member of Goddard 's research team .