YOU SAID:

Who knows how many are even capable of base-level thinking?

INTO JAPANESE

基本レベルの思考さえできる人がどれだけいるか誰にも分からない。

BACK INTO ENGLISH

No one knows how many people are capable of even basic level thinking.

INTO JAPANESE

基本的なレベルの思考さえできる人がどれだけいるのかは誰にもわかりません。

BACK INTO ENGLISH

No one knows how many people are capable of even basic level thinking.