What does Einstein mean by using the word ’acquired’ if not ‘obtained through learning’? Some kind of some machine-like or equally unconscious magical process of internalizing or possessing? Robotically/animalistically choiceless imbibement? Magically/spiritually bestowed? What else could ‘acquire’ mean?
In the context of Einstein’s use I think he means learned.
This is another instance of our general languaging revealing how poorly we understand and appreciate the profoundly vast meaning of the word learning (due in large part to the prejudices we’ve ‘acquired’) .
Common sense is the collection of prejudices we learn as children.