I cannot comprehend the phrase "error on" in this sentence:
For simplicity, I will focus on real-valued matrices and vectors, and I error on the side of intuitive examples rather than generalizations.
from this article: A Geometrical Understanding of Matrices by an American.
I googled and found that error can be used as a verb, but it seems that in the above sentence "error on" has nothing to do with "error". Is it slang? What does it mean?