Triage in medicine, from Nils Poertner
process of rapidly sorting and prioritizing patients based on the severity of their condition and the urgency of their need for care, especially during emergencies
Amateur /untrained person coming to a traffic accident (w multiple casualties) would rush to help those who cry the loudest (eg maybe just a broken arm) whilst neglecting those who need urgent attention (eg unconscious - about to pass out).
Analogy to speculation? Ordinary investors (ie untrained) getting hooked to "loud" and in your face "stories" in mass fin media - but perhaps neglecting the vital, more silent trends in mkts - which would help them make money over time.