A helical path viewed from the side IS a waveform. Such a trajectory is a three-dimensional wave. (Unlike the two-dimensional ripples in a pond). It could therefore be expected to produce the interference pattern. No duality required. Unlike EMR, electrons are fermions, of known mass.

What it does not explain is why the effect disappears when measured or, similarly, the distribution pattern through a single slit presented here.

But then again, neither does particle-wave duality, which really tells us nothing of substance. (Joke). It merely describes observed phenomena; it doesn't explain the cause or the principles at work or describe anything about what is actually happening. It merely describes what we have reason to believe isn't happening.

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