1) No relevance to the phenomenon the experiment demonstrates. The end result in the screen is noisy from all possible interactions with no relevance to the de

1) No relevance to the phenomenon the experiment demonstrates. The end result in the screen is noisy from all possible interactions with no relevance to the demonstration. The wall must not allow the particle trough. 2) The nature or the origin of particle does not have relevance in the experiment. Double slit experiment is now done with molecules made of 2000+ atoms and 10k electrons. https://www.nature.com/articles/s41567-019-0663-9 https://www.nature.com/articles/s41567-019-0663-9