Human Intuition

We know about things from a tenth of a millimeter to a few kilometers, from a fraction of a second to a lifetime, and so on. So when we are dealing with matters of quantum physics, particles of the size of 10-13 cm or in cosmology where we are talking about 10 billion light years or more, it is very reasonable that our intuition is not adequate to the task.

~ Carl Sagan (1934-11-09 1996-12-20 age:62)