There is an old saying believe none of what you hear and half of what you see. I've also understand that eyewitness testimony is often flawed. This is the reason I don't rely on my own observation to understand the nature of reality.
I while don't ignore my observations, or those of others, I know it is our condition as Sapiens to be limited in our perception of reality.
The image chessboard below helps make my point. Most people will look at the square labeled A and square labeled B not see them as being identical in color.
Many, even after being told that science has proven that these squares are they same color, many people will stubbornly hold onto the fiction that the squares are different colors--simply because that is the way they perceive it.
Sometimes we have to look at things a different way to perceive them correctly. You can print out the page, cut out squares A & B and place them side by side. But I find most people are unwilling to make this shift in thinking or take the extra to discover an answer that conflicts with their worldview. This too is part of the human condition.
Understanding why we perceive these squares as differently is a step in the direction of self-discovery.
I've shared images like this on this forum before, but in a different context.