That is how the English language works. “He” is the indefinite pronoun except in politically correct speech which is not English. He/she would be marginally correct but is awkward and entirely unnecessary.
11 posted on 07/25/2014 9:07:25 AM PDT by arthurus
(Read Hazlitt's Economics In One Lesson ONLINEhttp://steshaw.org/economics-in-one-lesson/)