I can hear the socialist already, "capitalism is oppression" and "one mans gain must be another mans loss". Neither of those statements are true, if I voluntarily want to exchange currency for beer with another individual then we would both be benefiting from the voluntary transaction otherwise one or both of the parties involved would not consent to said transaction. Value is subjective, if one individual values beer more than currency and vice versa for the other individual then they both profited, and if the transaction was consensual then nobody was being oppressed. Another awesome article Jared.