"A mind full of mush"

[Odessa Dawn]

"4. We think with the ideas held in working memory, which can only be accessed at high speed from the brain’s stored memory. Understanding is nourished by the information you hold in working memory as you think. Without such knowledge, we have a mind full of mush."
More: Five Reasons That Memory Matters | Psychology Today

Heinle's Newbury House Dictionary of American English

Definition of mush | Collins English Dictionary

mush - definition of mush by Macmillan Dictionary

To sum up: The whole piece is about people who abandon memorization that was a prized skill in the past and disadvantage of Google.

Question: Does "a mind full of much" mean dead brain, brain that doesn’t work unless external factors such as Google is available, or something empty?

Thank you,

[Gillnetter]

"4. We think with the ideas held in working memory, which can only be accessed at high speed from the brain’s stored memory. Understanding is nourished by the information you hold in working memory as you think. Without such knowledge, we have a mind full of mush."
More: Five Reasons That Memory Matters | Psychology Today

Heinle's Newbury House Dictionary of American English

Definition of mush | Collins English Dictionary

mush - definition of mush by Macmillan Dictionary.

To sum up: The whole piece is about people who abandon memorization that was a prized skill in the past and disadvantage of Google.

Question: Does "a mind full of much" mean dead brain, brain that doesn’t work unless external factors such as Google is available, or something empty?

Thank you,

Think of it more as something insubstantial, something without any real force. Mush (in the US) is a cereal fed to infants and to the elderly because it is soft, easy to eat and easy to digest. Mush, then can be considered as being something that is soft, without form, and easy to take in - definitions which are about the opposite of a trained mind.