Of course, sitting down to think involves hearing more than one opinion on an issue, such as evolution. If you only get one opinion in your textbook there's not much to think about.
Ah, but you are exactly correct...and I am one, who reads things from both sides...I never limit myself to reading only one opinion on a subject...I read many opinions...I love to read, and love to think....
And anyone who knows me at all, knows that I accept no ones word as having any authority over me...I never rely on what others think of movies they have seen, I never rely on anyone to tell me what is good or bad to read, I always, always, read as much as I can on a subject, from as many different perspective as I can, and then I make up my own mind...my husband and son would glady agree with me on this...even when raising my children, I taught them to never be bound by what someone else wanted them to believe...that as they grew and aged, they had the intelligence and wherewithall to inform themselves of many different opinions on many different things, and then they had the ability to ferret out the truth...
I always made sure that my children knew what I believed to be true and fast...but I also made sure that they knew that there were others who would disagree with me, I told my children what the disagreement would entail, I explained my reasons for believing as I did, I explained as best as I could, the opposing view(without name calling and abuse), and as my children aged and grew, they learned to root out all view on a subject, they learned to investigate, and they learned to make a decision for themselves...
If my childrens teachers could say only thing about my children, they would tell you that they were the type of children they loved to have in class...because of my childrens constant inquiries they(the teachers) had to be on their toes at all times, as my children were prone to guarded scepticism on many varying subjects, and were always posing questions, seemingly beyond their years....
I was taught to be this way by my parents, I passed this along to my children, and it has served all of us quite well..