Often in many ways rigidity is promoted a lot and a distancing to creativity. My view is a fear or just inability of the mixing of things, for example gender stereotypes are often used to categorise opposites. The bible also for example forbids hybrids. Things are kept separate and binary. People see in black and white and so only one or the other. Things can’t randomly come together and interrelate. Things are seen through differences rather than similarities.
Its hard not to succumb to the idea of solid categories which are kept separate from each other. You think a chair is for sitting on but you forget, maybe there are other uses? Could it be there to make a sculpture or a fort? Or maybe you could make a chair that is also a table. Its important also to experiment and look for new things or new uses.
It is hard when repeatedly creativity is stifled by forcing you into a box or mold so you can’t grow in certain directions and your mind set becomes more narrow and less here and there.