Getting help with an answer can often remove any need to think.
Except the need to think about how I could remember how to solve it the next time.
Often I've unknowingly believed that there is a disjunction between common sense and reasoning because I've believed that my common sense was no help.
In reality it was just a lack of communication between common sense and reason.
Learning helps the brain communicate within itself.
It is not merely learning more, but the ability not just to see connections, but communicate them.