
We have done a test to see what happens if we try putting a pencil through the hole in a nut while one eye is closed. As it happens, it could be a challenge because we are losing a sense of how far away the pencil is.

We have done a test to see what happens if we try putting a pencil through the hole in a nut while one eye is closed. As it happens, it could be a challenge because we are losing a sense of how far away the pencil is.