What is the author's purpose in "why we can't get along" by Stanley Fisher

i decided to stay late in the laboratory to continue my experiment with the lightbulb. at midnight, thomas edison opened the door and saw all the stuff he was working on. the lightbulb, film and the transmitter. as he walks in an idea hits him on how the lightbulb would work. he would have to change a few wires around to get it to light up. when he did change the wires around it worked so he decided to write a telegraph to his friend to tell him about his success.   as he was packing up he grabbed the telegraph and walked to his home. he told his wife about the success and the next morning mailed the telegraph.

the negative way that it shaped life was by having a feudal system where only the nobles and the christian church while it was oppressive to the peasants and specially to women. the positive way that it shape life is by introducing the artisan class when the feudal system fell. it change the attitudes towards religion and it also introduced what was known as knightly chivalry.

-hope this : )

the answer to your question is (a. counted on)