difference between precursors, predecessors and progenitors

[Ros]

Business English Lesson, Advanced Level

ESL/EFL Test #164 "Corporate Taxation", question 10

As early as the 17th century, Sir William Petty, one of the ......... of modern economics, argued that a tax on the production and sale of commodities would eventually be shifted by producers to consumers, who would pay it in the form of higher prices.

(a) planners
(b) precursors
(c) predecessors
(d) progenitors

Business English Lesson, Advanced Level

ESL/EFL Test #164 "Corporate Taxation", answer 10

As early as the 17th century, Sir William Petty, one of the progenitors of modern economics, argued that a tax on the production and sale of commodities would eventually be shifted by producers to consumers, who would pay it in the form of higher prices.

Correct answer: (d) progenitors
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Hello, I do not see the difference between "precursors", "predecessors" and "progenitors". Could you explain it to me?

Ros

[Mister Micawber]

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Precursors and predecessors are simply 'things of the same sort that come before'-- but Sir William is not an item of economics. Only progenitor represents a person who initiates something.
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Native English teacher at Mister Micawber's

[Alan]

Hi,

'Predecessor' can be used to describe someone who holds a position/job before the current holder.

Alan
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English as a Second Language
You can read my ESL story In touch

[Mister Micawber]

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Yes, of course, Alan-- but a person before a person. The idea is that precursors and predecessors must be of like nature.
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Native English teacher at Mister Micawber's