When we are little, we learn how to learn things. We start learning once we understand how things are logically connected. Of course, for that, we do need to first understand how logic works. Many of us do get to spend a lot of time alone, just thinking about things, logically connecting them in some way or the other, experiment and then verify. We can then finally draw conclusions about something being right or wrong just by being rational, with logic. The best part is, it's not even an absolute thing. We could have our own logic to draw different conclusions for the same data. I also did the same, when I finally thought I could understand things, I became a rational person and created own set of rules for myself.
