Nobody was born dumb, instead, everyone was born with residual knowledge. What makes the difference is how you choose to develop and grow that residual knowledge to better adapt to your environment. One way to develop that residual knowledge is by reading value-added books.
It might interest you to know that I started reading several books way before I was age 16 (my both African parents are teachers, what do you expect?). At 16, I remember reading the book “7 Habits of Highly Effective People”. A book I stumbled upon on my father’s shelf. The sentence structure was way stronger to understand, yet I finished it. I had a need to read it again when I was 22 after graduation and it made a lot of sense to me. I have read books which kind of shapes my thinking process. I still buy and read books, make visiting the library habitual; because it saves me considerably a significant amount of money.
How well do you develop your mindset or acquire knowledge? Many want to read, only when it is related to their field of study. Little wonder why their thinking process is self-centered. By reading others well of knowledge, research works and accomplishments, yours is shaped and molded. Seek knowledge at all times by investing in books. It’s not too late.