Meaning of the word "lookers-on see most of the game" in English

What does "lookers-on see most of the game" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

lookers-on see most of the game

US /ˈlʊk.ərz ɒn siː moʊst əv ðə ɡeɪm/
UK /ˈlʊk.əz ɒn siː məʊst əv ðə ɡeɪm/
"lookers-on see most of the game" picture

Idiom

people who are not directly involved in a situation can often judge it more accurately than those who are

Example:
I know you're stressed about the project, but remember that lookers-on see most of the game; maybe you should ask for an outside opinion.
They couldn't agree on a solution, but as they say, lookers-on see most of the game, and the consultant spotted the error immediately.