Even when we believe we're both looking at the same item -- chances are we aren't,because I may be looking at its top and you, its bottom. Or perhaps your eyes are closed at this precise instant because you needed to blink, and mine are open.
Are you familiar with the parable of the Blind Men and the Elephant? There are numerous versions (and lessons gleaned) from this tale, depending on whether it's the Hindu, Jain, Sufi Muslim, Buddhist, Anglo, etc., spin or another. There is even a modern twist involving quantum physics.
Basically, a number of people who cannot see the elephant each feel a part of it and insist that the whole of the beast is like what they experienced (tail is like a rope, leg is like a tree trunk, ear is like a huge fan, etc.). The "moral" of the story depends on the culture and purpose for telling it.
There's even an elephant joke that flips the tale on its head:
Six blind elephants were discussing what men were like. After arguing they decided to find one and determine what it was like by direct experience. The first blind elephant felt the man and declared, "Men are flat." After the other blind elephants felt the man, they agreed.~~Wikipedia
To remain fully rounded, we may as well laugh about these differences in perception as well as perspective, and do the best we can to get along.~~GH