<i>Many of these problems with models arise because more businesses are buying machine-learning systems but lack the in-house know-how needed to maintain them. Retraining a model can require expert human intervention.</i><p>I think this quote is very interesting since it is a practical use case where humans trusting computers and algorithms without enough understanding could be dangerous. One can think, me especially when working with banks, insurance companies and health care industry, that they are slow and too rigourous. Though, in times like these I kind of appreciate the thoroughness in their procurement and policies.