What happens to decision-making when feeling is removed?
What it argues
Patients with ventromedial prefrontal damage can reason normally on tests and still cannot decide, because they no longer generate the bodily signals that mark options as good or bad. Emotion is part of rational choice, not an intrusion on it. The pure reasoner is a patient, not an ideal.
The probe
Take a decision you are stuck on. Ask what you would lose if you felt nothing about any option. The answer names what your feelings are doing.
The source
Descartes' Error; The Feeling of What Happens — Antonio Damasio, 1994. The link goes to the text or to a catalogue record for it, not to a summary. This one is a catalogue record: the entry gives you the question and the probe, not the argument in the author's words.