Knowledge is limited?
   Can we see what a bare human eye cannot see?   We may say that we do it right now, but in reality we don't. If a bare human eye can't see a particular thing then scientists and engineers cooperate to invent a technology that will enable humans to do so. Miroscopes, telescopes- they were produced to enable humans to see what is not possible to be seen for a human eye. But is it possible for humans to gain knowledge in sciences when they cannot actually see a phenomenon?          There are scientists that claim a possible knowledge claims without actually seeing a phenomenon, however, it is never called  a fact. Even apart  from sciences, in every day life people usually do not believe if they have not seen that. For example, 2 weeks ago when the US elections ended I was at school and my friend told me that Donald Trump won the elections. I could not believe that. Even though I knew he was a strong candidate, but the media that I was surrounded, social media, celebrities talk...