Rebel

" Until they become conscious they will never rebel, and until after they have rebelled they cannot become conscious" ( Orwell, 70).

Conscious is defined as "perceiving, apprehending, or noticing with a degree of controlled thought or observation". Not only is Orwell saying that the Proles have no information, but that they don't really know how to think or react to their surroundings. This passage is also informing the reader that the chances of a rebellion are slim to none because of the proles ignorance.

Links:
http://www.merriam-webster.com/dictionary/conscious