On vast white sea ice, the blobs of brown are feathers left behind by penguins as they moult
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今年春節前，海外留學歸來的高先生推開家門，看到的景象讓他愣在原地：母親一手握着手機，在窗台前的水晶堆裏挑挑揀揀。從大到小的水晶擺件佔滿整個窗台，都是母親幾個月來從直播間「淘」回來的。更讓他擔憂的是，母親肩頸疼痛已嚴重到走路、站立都成問題，總是佝僂着背。
The story starts with quantum field theory, which is incredibly complex, but the simplified version is that even empty space is filled with fields that could govern the interactions of any quantum objects in or near that space. You can think of different particles as energetic excitements of these fields—so a photon is simply an energetic state of the quantum field.