After the Iran-Iraq war, the Basij returned to its role as an internal security force to enforce Islamic morality.

CNN: Feared Basij militia has deep history in Iranian conflict

"Computer systems don't have a sense of morality, " exclaims MacKenzie, noting the take-one-for-the-team role played by floor specialists in keeping an orderly market--a role that's been marginalized with trading so widely dispersed.

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