People form opinions based on lots of things. People also mess up the scientific method all the time (especially scientists).Could you please explain more how it is opinion, and explain what it is then?
Galileo is a great example of good science. In his time the common current belief was that the universe rotated around the earth. The science was in, and religion supported it. The hypothesis of a heliocentric system, supported by experimentation using a telescope, Galileo was able to support his hypothesis. This did not end well for him...
Looking up information for a paper is a noble endeavor. You will learn from it. Be careful to sift through the "opinions". Look for humble points of view supported by well documented experimentation. If someone is confidently positive that they know the absolute truth, I bet they don't...
Hope that helps.