in today's lecture, we'll delve into the fascinating world of sheep and how their behaviors offer invaluable feedbacks, guiding us in understanding complex biological systems. for instance, when sheep withdraw from their usual grazing patterns, it serves as a preexploratory signal, prompting researchers to go back to the start and re-examine initial assumptions. it's a reminder that sometimes, what seems unobtainable can be within reach with the right perspective and analysis.