Looking for a term or phrase to describe a discussion where there is no one right answer [duplicate]

moot point

A moot point is a topic which has been talked to the point of exhaustion without any decision being made.

• The use of tabs versus spaces has become something of a moot point
• Whether Shakespeare even wrote these two sonnets is a moot point, but the fact remains that they are among the most well-known verses in English.

“Moot point” is the most common noun-phrase using the adjective “moot”:

• moot (adj.) often discussed or argued about but having no definite answer.

Unless you are using “moot point”, you generally describe something as being moot rather than applying the adjective to the noun:

• No: It is a mostly moot argument
• Yes: The argument is mostly moot.

to moot

The verb form of “moot” is also used in British English to describe something that is put forward for discussion, usually in a political context:

• “Hard border mooted by UK in 1980s : Officials from the British government were proposing a physical ‘hard’ border at the height of the Troubles in Northern Ireland, it was revealed in declassified state papers released last week under the 30 year rule.” - Irish Independent, 6. January, 2018.

This goes back to the original meaning of a “moot”, an Anglo-Saxon term for an assembly held to discuss how a clan or tribe would be ruled.

never say “mute”!

There’s a common error in American English of describing arguments as “mute points”. Please don’t do it.