Personally it's satisfying when customers thank you for your product. If you're looking to make a difference only by thinking, then you need to study the indust

Personally it's satisfying when customers thank you for your product. If you're looking to make a difference only by thinking, then you need to study the industry you are in and its purpose in society. Is high frequency trading really about the allocation of resources in the economy ? Who wins, who loses, and why ?