The root cause is usually a weak lower esophageal sphincter. Water creates additional pressure in the stomach which causes acid reflux. For me anyway, this is only an issue if I haven’t eaten, drink water and then lay down. (It’s the laying down bit that is probably key.)
Eating non-junk, low acid foods actually helps relieve some heartburn for me in some cases.
You could probably map resonance artifacts, but you have to isolate layers that were printed at the same speed and direction. However, the second you tighten a belt or screw, that pattern will change and I am not sure how consistent resonance patterns would be on a bed slinger. (The quantity and density of printed plastic may change the resonant characteristics of the entire printer. This may be less of an issue on a core xy.)
Thinking waaay outside the box… In some cases, I have seen extruder gear marks on the filament create artifacts on a print. Every gear pattern should be unique, but measurable differences would probably be micron or sub-micron.
Maybe you could map the surface of textured beds as I seriously doubt that those patterns would be consistent and more prone to randomness from the factory.
There are a ton of conditions that could generate unique artifacts on a print, now that I think of it. Hell, even a printers PID tuning can leave visible and repeatable errors.