"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 ofa. bottom-up processing. b. top-down processing. c. template matchingd. feature recognition.