No future in pursuing that sort of discussion?

[Roman45]

English Idioms and Expressions, Intermediate level

ESL/EFL Test #2 "Send the right message", question 9

There is absolutely no mileage in pursuing that sort of discussion.

(a) no future
(b) no interest
(c) no distance
(d) no time

English Idioms and Expressions, Intermediate level

ESL/EFL Test #2 "Send the right message", answer 9

There is absolutely no future in pursuing that sort of discussion.

Correct answer: (a) no future

Your answer was: incorrect
There is absolutely no interest in pursuing that sort of discussion.
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how one should understand - no future in pursuing that sort of discussion? why can't we use - no interest?

[Alan]

Hi,

'No future' suggests that there is no point/purpose in following that sort of discussion. 'No interest' wouldn't work in that sentence because it would have to have a personal subject: I have no interest in following that argument.

Alan
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English as a Second Language
You can read my ESL story A day in the life of a driving instructor