Because it helps spread ideas and pinpoint what you might be thinking of.
Answer:
Is there any passage we can read to help out??
The correct answer should be male, serve, assembly
These are the keywords that construct the meaning. Things like each or local are used to further describe the keywords. For example, you could remove local from the sentence without affecting the meaning of it, but you couldn't remove assembly because the meaning would change.<span />
A MOOC is a massive open online courses. Believing the hype is something I cannot answer for you. It is an opinion, and it is yours to answer.