> they always deposit energy over a time window ... Also this means they really don't exist as point particles I am afraid this is already the orthodox view, d

> they always deposit energy over a time window ... Also this means they really don't exist as point particles I am afraid this is already the orthodox view, despite the suggestive/misleading pictures used when teaching particle physics (e.g. Compton's scattering). But even the well-informed photon concept where a photon isn't a point, isn't a plane wave, and usually there is indefinite number of them, is quite horrible. I hope some day the status quo will move where we realize that both the hand wavy imprecise photon talk in textbooks/pop-sci books and the sophist "just a figure of speech when we're talking about quantum field" will be abandoned in favor of more accurate technical terms.