My answer to all of those questions: it doesn't matter. A person is considered to be smart when they are apt at solving the problems they tend to encounter. My

My answer to all of those questions: it doesn't matter. A person is considered to be smart when they are apt at solving the problems they tend to encounter. My point is that reading books alone doesn't confer this ability to any notable extent, whereas you'll find smart people read books relevant to the problems they solve which is why they are considered smart. The notion that reading exercises the mind to create intelligence in the same way one might exercise a muscle to improve it is disproved by showing that other exercises of the mind fail to have that effect.