Dead reckoning
From FIRSTwiki
Dead reckoning refers to a robot operating without awareness of how the environment around it is changing. In FIRST, it typically refers to the method of programming the autonomous mode, and generally refers to a robot that does not use any sensors for the autonomous mode. However, that is not entirely accurate. A robot using encoders could be considered dead reckoning.
A dead reckoning robot lacks the ability to respond to a changing environment. However, by not using sensors, dead reckoning robots can operate much faster and still be consistent (although that could easily be consistently wrong).

