When someone trades with their own money rather than on behalf of others, they have a direct personal stake in the outcome. This means that if something goes wrong, it affects them personally and directly, unlike when they trade for an organization or represent another person's interests. In such cases, the trader faces immediate financial consequences and must be more cautious and responsible.
The deeper meaning behind this quote touches on the concept of accountability and personal risk in decision-making processes. Taleb is highlighting how individuals tend to make better decisions and take more prudent actions when they have their own resources at stake rather than those belonging to others. This principle can extend beyond financial trading to various other areas where people are entrusted with managing assets or making choices for others, such as corporate executives or government officials. The idea is that personal responsibility often leads to more careful deliberation and better outcomes.
Nassim Nicholas Taleb is a renowned author and statistician known for his work on probability and uncertainty. He has written extensively about decision-making under conditions of extreme uncertainty, particularly in fields like finance and economics. His insights often challenge conventional wisdom by advocating for robustness against unpredictable events rather than focusing solely on predicted outcomes.