Electrons exhibit interference due to their wave-like properties, despite being classified as particles. When electrons are fired one at a time, they still create an interference pattern, which is explained by their wave function representing probability distributions. In contrast, bullets, being much larger, have negligible wavelengths, making their interference patterns effectively Gaussian and difficult to observe under normal conditions. However, if bullets are launched with low enough momentum, their wavelengths can become comparable to the slit width in a double-slit experiment, allowing for observable interference. This discussion highlights the dual nature of quantum particles and the conditions necessary for interference to occur.
