If you take a picture of a CRT screen, the camera only captures the part of the screen presently
lit by the scanning line(whereas the brain does a lot of Smoothening to make the screen look completely normal
and uniform to us).
The tiger beetles excavate tubular tunnels in the ground, lay their eggs at the bottom, carefully refill the tunnel with mud and
even take the extra trouble of Smoothening the surface of the site, so as to
leave no tell- tale marks for an enemy.