  No systematic procedure currently exists for inferring the underlying physics
from discrepancies observed in high energy collider data. We present Bard, an
algorithm designed to facilitate the process of model construction at the
energy frontier. Top-down scans of model parameter space are discarded in favor
of bottom-up diagrammatic explanations of particular discrepancies, an
explanation space that can be exhaustively searched and conveniently tested
with existing analysis tools.
