Exactly. Not everything is a zebra, plenty of horses, but... When I teach new EMTs, there's a common topic that comes up. For clarity, EMTs undergo about 200 h

Exactly. Not everything is a zebra, plenty of horses, but... When I teach new EMTs, there's a common topic that comes up. For clarity, EMTs undergo about 200 hours of training, for what is called BLS (basic life support) - essentially non-invasive processes. Generally they can only administer about 5 medicines (oxygen, aspirin, epinephrine, glucose, nitroglycerin). Paramedics undergo up to 1600 hours of training, for ALS (advanced life support), and can start IVs, administer ~40 medications, and do a variety of invasive procedures. So our local EMS protocols say that if you administer a caloric supplement (i.e. glucose) for someone with hypoglycemia, you must "upgrade" that call to ALS and have a paramedic respond. "But what if the patient is getting better?" As expected, as hoped. And if the hypoglycemia is really just that, then 99% of those patients won't need, or want, further care/transport. And for 99% of that 99% (arbitrary, but very high, percentages), it's probably entirely reasonable. "So if they're getting better, why do we want a higher level of care?" For the zebras. For the person with endocrine issues, or for whom hypoglycemia isn't a simple diabetes-related thing, but actually symptomatic of early organ failure, or other things, to get a deeper review to make sure we don't say "Sure thing, Mrs Smith, just stay home and have your husband make you a PB&J or two for some complex carbs" to the patient who has something more serious going on.