 Conceptual thought comes from ignorance, so by eradicating ignorance, one eradicates conceptual thought. In other words, since an awakened being is completely free from ignorance, she has no concepts whatsoever. This claim is quite controversial for obvious reasons: buddhas are understood as consisting of perfect wisdom, and are described in scriptures as omniscient beings. How, then, can a buddha have no concepts at all, but still be considered omniscient?