This question is based on the fourth and fifth slides of the video above (minutes 3:00-6:30).
The Lump of labour fallacy says:

Question

This question is based on the fourth and fifth slides of the  video  above (minutes 3:00-6:30). 
 The Lump of labour  fallacy  says:

Answer

the total amount of work available in the society is fixed

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humans are more  efficient  at doing work than robots

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robots are more  efficient  at doing work than humans

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the more labourers an employer hires, the less their  wage  will increase

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