Living in a world without a lot of external controls requires a lot of personal responsibility. (nakedpastor.com)
The freedom from external controls is the single greatest strength and weakness of the system, and that will become painfully obvious in the near future. (thenextweb.com)
The chamber was then placed inside an electromagnetic coil system that was mounted onto a microscope with external controls to manipulate the strength, rotation frequency and direction of the magnetic field. (sciencedaily.com)