Me plz explain why it's wise to only proofread a document for only one type of error at a time.

6–6. business case problem with sample answer— criminal liability. during the morning rush hour, david green threw bottles and plates from a twenty-sixth- floor hotel balcony overlooking seventh avenue in new york city. a video of the incident also showed him doing cart- wheels while holding a beer bottle and sprinting toward the balcony while holding a glass steadily in his hand. when he saw police on the street below and on the roof of the building across the street, he suspended his antics but resumed tossing objects off the balcony after the police left. he later admitted that he could recall what he had done, but claimed to have been intoxicated and said his only purpose was to amuse himself and his friends. did green have the mental state required to establish criminal liability? discuss. [people v. green, 104 a.d.3d 126, 958 n.y.s.2d 138 (1 dept. 2013)] (see criminal liability.)