The sky promised rain when I visited a nursery. A group of three-year-olds had been playing in the sandpit, and they too noticed the darkening clouds. In response they set out all their pails and pots to catch the raindrops.
Two children stacked several crates, then placed their buckets on the stack. I wondered about this and asked them why. They stared at me and then explained (with a patience reserved for slow-witted adults) that the closer you get to the clouds, the more rain you'll catch. Of course!