LEGO-Like Microassembly Using Reversible Dry Adhesion

When I was a kid, I was fascinated by watching water striders glide on the water and would wonder: why do they not drown but instead play, standing effortlessly on the water? This is undoubtedly a common question among curious children. The simplest answer would be "because the insect is very small and light." So then, why are smaller things better able to float on the water? An aircraft carrier can easily float on the sea too, although it is extremely large.