Please refer to the diagram above. A long queue of people (black dots) coming from A is going to get on to the escalator (pink colour). A person B wants to get on to the escalator and B comes from the green dots area so B stands right next to the escalator and patiently squeezes onto the escalator bypassing the endless queue of people coming from A.
The question is:
Did B just cut queue (is B expected to walk towards A and try to find the end of the line - there may be no end as more and more people are walking from A towards the escalator)?
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