A new mishnah! When a guardian doesn't take good care to protect coins... when is he liable? With a focus on the verses that insist on proper supervision. Also, the blessing that only appears in that which is not obviously visible. Plus, storing money in a place that is protected from one potential threat, but subject to another one. Likewise, the question of whether negligence is relevant when a guardian puts the thing he's protecting under the protection of another. With a slew of cases to explore.