How do you identify shift in point of view on incorrect pronoun, the invention of the phonograph machine in 1877 by Thomas Edison, which went on to revolutionize the music industry,

Pronoun “WHICH” has more than one antecedent to which it refer to, thus making it an incorrect or unclear pronoun.

Explanation:

Pronouns are used in place of noun and must refer to its antecedent, i.e. something that is already stated in the sentence.  If there are more than one antecedents in a sentence, then it makes the pronoun either an ambiguous pronoun or unclear/incorrect pronoun.  

The solution is to rephrase/rewrite the sentence or removing the ambiguity to make the reader understand the sentence clearly.

Corrected or Rephrased Sentence 1:  The phonograph machine, which was invented by Thomas Edison in 1877, went on to revolutionize the music industry.  

Corrected or Rephrased Sentence 2:  Thomas Edison invented the phonograph machine in 1877, which went on to revolutionize the music industry.

to kill a mockingbird basically is about a lawyer who goes against everything in a racist society like at the time of this novel, to defend a black man accused of sexual abuse. in the bible there are cases like that of joseph, who was accused by the woman of potifar, for a crime similar to that of tim robbinson, of that novel (genesis 39: 1-20). at this point we see that god also provides the escape to joseph, who was accused unjustly, but in his time, and through his attitude, his faith was not shaken, and god provided the solution. the perspective of god also written in the bible and not pay evil with evil. (ephesians 4: 32, 1 thessalonians 5: 15, 1 peter 3: 9). atticus, the lawyer, demonstrated during this lee novel, empathy, love of neighbor, understood the situation of this accused man. he went against everything in that society, and stood in favor of that man, for the injustice committed. this shows the empathy, the love taught by christ, in some passages that speak of love and justice in the sermon of the beatitudes (especially verses 6 and 7 of matthew 5).

as for symbolic actions, the narrator's tearing down the wallpaper in an attempt to find the "woman" in the wallpaper represents her struggle to retain or regain her sanity.   the wallpaper has been part of her confinement and by her tearing it down, she is freeing herself from that confinement.