Meaning of the word "you cannot put an old head on young shoulders" in English

What does "you cannot put an old head on young shoulders" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

you cannot put an old head on young shoulders

US /ju ˈkæn.ɑːt pʊt æn oʊld hed ɑːn jʌŋ ˈʃoʊl.dɚz/
UK /ju ˈkæn.ɒt pʊt ən əʊld hed ɒn jʌŋ ˈʃəʊl.dəz/
"you cannot put an old head on young shoulders" picture

Idiom

used to say that a young person does not have the experience or wisdom of an older person

Example:
He made a mistake, but you cannot put an old head on young shoulders.
Don't be too hard on her; you cannot put an old head on young shoulders.