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.

Explanation:

According to my research on the different Psychological terms used when dealing with memory processes, I can say that based on the information provided within the question Human postal workers are much more successful because of a term called top-down processing.

This term refers to how our brains use the information that has already been stored in our brains by one of our many senses. In other words this is the process in which we put to use the abilities we have learned through practice/repetition.

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question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals