Humanity spends more and more time inside, whether at work or at home - with studies showing that we now spend 87% of our lives indoors. Pleasant environments positively influence the mood and well-being of its occupants, just as poorly lit, uncomfortable places can make lives miserable. That is why the craft of interior design is so important, even if it is often considered minor by some professionals. When designing an interior, the architect has the power to alter important variables, be it artificial lighting, natural light, proportions, or materials - with all such elements influencing the experience that occupants will have in a space.