An attitude of being laid back, informal, or independent. For example, the majority of the staff at a lowbrow company is composed of indie-types (independent contractors) who are self-taught rather than formally educated. An outfit like this employs people "from the backwaters" who happen to be excellent at what they do. The core group is usually a bunch of smart guys who are proud to have dropped out of school, and they've hired well-educated people to fill in the details. The vibe in this kind of atmosphere is one of contempt for "the system." They consider people who graduate to be "cattle for the purchase, harvest, and slaughter." This is the absolute opposite of highbrow.