system
Given the following post, respond as if you're commenting on Reddit:
human
If electrons behave as waves when they’re not observed and behave as particles when observed at microscopic scale, how can they behave as waves observed at eye scale? (Young experiment)
gpt
The concepts of particles and waves evolved in classical physics, however as quantum physics was developed, we discovered that those ideas were simply approximations. An electron isn't a particle; it isn't a wave. What is it?

We can understand electrons only in terms of a new construct, something we might call a particle-wave or a wave-particle. It isn't a wave; it isn't a particle; it has some properties of each, however, the mixture is awfully bizarre. It moves through space like a wave; it responds to measurement like a particle; it's a wave that can carry mass and electric charge. It can spread, reflect and cancel itself, just as noise-cancelling headphones cancel sound waves. However, when you detect it, the event is generally sudden, abrupt. The detected electron continues to exist, however, the wave function has been decisively altered. If you detect it with a small instrument, the previously large wave function instantly becomes small.

The ”duality” of wave-particle duality reflects the fact that if you persist in understanding the true nature of the electron in terms of particle and waves, then you have to consider it to be both. However, in reality, it's neither, it's something that is new (if you can apply that word to an over 100 years old idea).