Can we know anything for sure? We can.

Aren't you making a fundamental error when u say reality is what we believe it is? Not at all and now that you have given me the opening, I shall try to prove that reality is indeed what we believe it to be. 1) Does what I believe change reality? There are some scientists, like Dr. Joe Dispenza, D.C who claim that your mind can actually change your reality. The brain is not static, rigid and fixed. Brain cells are constantly and continually remoulded and reorganized by our thoughts and experiences. Recent studies in neuroscience have shown we can change our brain just by thinking. When we truly change our mind, there is a physical evidence of change in the brain. [1] One of the most basic ways that beliefs can shape reality is through their influence on behavior—no quantum physics needed. For example, if you believe that you’re capable, competent, and deserving of your dream job, you’re probably more likely to notice and seek out opportunities that could help you get there. You’re also more likely to perform well in an interview. Contrary to the common assumption that overconfidence can backfire, research suggests that it may actually be beneficial: Overconfident people tend to appear more socially skilled and higher in social status, even when those evaluating them have access to objective information about their actual ability. [2] Your beliefs can shape your reality not only by influencing your own behavior, but also by influencing other people’s behavior, from close relationship partners to complete strangers. In one classic study, male participants were led to believe that a woman with whom they spoke on the phone was either attractive or unattractive. Analysis of the recordings by outside observers showed that throughout the conversation, women perceived as more attractive came to behave in a more friendly and likable way than those who were perceived as less attractive, suggesting that participants’ expectations not only shaped their own perceptions of their conversation partner—they also seemed to elicit behavior that confirmed their expectations. [2] Health and disease are influenced by multiple interacting factors, many of which are not fully under your control, including genetics, exposure to environmental toxins, history of trauma, and socioeconomic circumstances. But research suggests that beliefs matter too. In one study, middle-aged adults who held more positive beliefs about aging lived an average of 7.6 years longer than those who held more negative beliefs, even when controlling for current health and other risk factors. In a number of other studies, optimistic people were found to be less likely to develop heart disease, again controlling for other risk factors. [2] As you can see, there is a lot of evidence that proves that what you believe can change your reality through a number of ways. There is the physical change, the behavioural change, and the effect that our behavioural chances have on others. Additionally, by believing that something is possible we open the door to find a way to make it possible as I will show in the next paragraph. 2) Reality was that he couldn't fly. He didn't change reality by believing he could. He failed yes, but the funny thing is that others also had that belief and they did change reality: The Wright brothers, Orville (August 19, 1871 – January 30, 1948) and Wilbur (April 16, 1867 – May 30, 1912), were two American brothers, inventors, and aviation pioneers who are generally credited[1][2][3] with inventing, building, and flying the world's first successful airplane. They made the first controlled, sustained flight of a powered, heavier-than-air aircraft on December 17, 1903, four miles south of Kitty Hawk, North Carolina. In 1904–05 the brothers developed their flying machine into the first practical fixed-wing aircraft. Although not the first to build and fly experimental aircraft, the Wright brothers were the first to invent aircraft controls that made fixed-wing powered flight possible. [3] By believing it could be done, they opened the door to flying and they changed our reality by making a dream come true. 3) I know this last section is a little off topic but I am used to it being a concern people have with Christianity so I followed the rabbit trail I guess?? There are people who do have a lot of issues with religion yes which is not only unfortunate but also shows that there is a lack of respect. The way I see it, religion can give people a solid foundation which in turn can provide them with a lot of strength. People who have something to belief in will always be stronger than those who don't belief in anything and it may just be that those who do not believe in anything are jealous of those who can. In other words, I will not ridicule (nor did I intend to ridicule) what you belief. [1] http://www.messagetoeagle.com...[2] https://www.psychologytoday.com...[3] https://en.wikipedia.org...