OMG. God stuff.
Look down after rain and you'll often see this, leaves and other plant material arranged neatly into long arcs, with silt banked up on the concave side. Sometimes there are many rows of these arcs. This is the way that bare ground is often re-vegetated, the wall of plant debris traps silt, which builds up new soil behind the wall. Grass and other plants then grow in this soil, and what was previously bare ground is now covered. What's wonderful about this is that it happens all by itself. Looking down at these soil traps, in their regular rows, it would be tempting to assume somebody had organised the whole thing. But the water and plant material and soil do all of this by themselves. In the debates between atheists and those in traditional religions, there is a lot these little walls of leaves have to teach people. Most of these debates revolve around the nature of design and purpose in the world, about whether somebody or something (God) is behind the scenes pul