The evidence suggests something far more sudden than gradual melting. If you're looking at multiple cosmic impacts directly into the ice sheet, you're not dealing with slow drainage from a hypothetical reservoir. You're dealing with instantaneous fracturing on a massive scale. The ice doesn't just melt from the top down over centuries. It shatters. Meltwater that was sitting on the surface now has immediate access to the bedrock below. At the same time, you're injecting enormous volumes of water vapor into the atmosphere, which has to come back down. That means precipitation on a scale difficult to imagine. The physical evidence in the Channeled Scablands, the Finger Lakes, and similar landscapes points toward catastrophic flooding driven by mechanisms far more violent than anything in the standard model. This isn't speculation. It's what the landforms are telling us.