The field trip in last Wednesday made me think inner structure of buildings.
There are the flow of air, water, steam, electricity and so on.
Even though some are invisible and others are covered by pipes or wires,
they keep moving, they are active and alive.
This is my impression.
what's with arrows? i am amazed at how universal they are, and therefore are found everywhere.. but are they? i always wonder if the arrow is an intuitive symbol.. could someone that haven't been in touch with arrows before infer its meaning?
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