[Caelus9]

If you want to slow cognitive decline or improve mental flexibility, then learning a second language, even if it's started later in life, does make sense, but expecting it to improve intelligence or memory overall is probably a beautiful but unrealistic fantasy.

[331c8c71]

> then learning a _second_ language

Strange way to phrase it. Lots of people know more than one language already.

[sandbach]

'Second language' is a technical term meaning a foreign language learnt after early childhood. For example, if someone grows up speaking English and German natively and then learns French at school, French is a second language to them, even though you could say it's language #3.