Student or Learner
Our friendship is based not only on our history, but also on the opportunities for development and prosperity that it presents for the future. Our scientists work together to push the boundaries of knowledge.
Source: Facing global terror together - Israel Opinion, Ynetnews
What do we mean by "the boundaries of knowledge.?"
***Not a teacher***
pushing the boundaries of knowledge --> moving past the limits of our current knowledge --> discovering new things
The boundary in this case would be between what scientists know and what they don't.