Medical ethicist: Assuming there is a reasonable chance for a cure, it is acceptable to offer experimental treatments for a disease to patients who suffer from extreme symptoms of that disease  Such patients are best able to weigh a treatment' s risks against the benefits of a cure
Ttherefore, it is never acceptable to offer experimental treatments to patients who experience no extreme symptoms of the relevant disease
Even a geological engineer with a background in economics can lose money investing in mineral extraction. So, those who are less knowledgeable about geology or economics should not expect to make money in every investment in mineral extraction.