Perceiving machines are used by the U. S. Postal Service to "read" the addresses on letters and sort them quickly to their correct destinations. Sometimes, these machines cannot read an address because the writing on the envelope is not sufficiently clear for the machine to match the writing to an example it has stored in memory. Human postal workers are much more successful at reading unclear addresses, most likely because of .

Top-down processing ability

Explanation:

A unique characteristics of humans is the ability of our brain to make use of information that has already been brought into the brain by one or more of the sensory systems.

Unlike machines that cannot read an address because the writing on the envelope is not sufficiently clear for the machine to match the writing to an example it has stored in memory, humans do not have to wait for the senses to provide information about the objects to the brain. Rather our brains can think through situations and reach right conclusions using Top down processing.