Gurls People possess fundamental properties like electrons possess mass and spin , only far more complicated. When people interact, they do so indirectly by virtue of these properties. Sometimes you can only try to understand about someone's properties, even your own, by sorting through that which comes of our interactions.
Physicists collide millions of protons in hope of observing a single fleeting interaction.
Our attempts to glean wisdom are seldom better, but sometimes we're fortunate.