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Using special techniques that present information to one eye while hiding the information from the conscious mind (by masking it with more distracting imagery presented to the other eye), researchers have shown two new and very unexpected things: we can read and understand short sentences, and we can perform multi-step arithmetic problems, entirely unconsciously. The results of the reading and calculating are available to and influence the conscious mind, but we remain unaware of their existence. While we have known for some time that a great deal of sensory processing occurs below the surface and affects our deliberative behavior, it was widely believed until now that the subconscious was not able to actually do arithmetic or parse sentences.