A and B are discussing a list of tasks to do. (I assume that they are reporting on government statistics for a particular country, let's say it is China.)
They need to look up the literacy rates in China. They need statistics on the schools. B suggests, why don't we look up the statistics in the encyclopedia (because that is a simple resource, easier than reading lots of books.) A says - no, the encyclopedia will not have current statistics, it is old. B then suggests calling the Chinese embassy to ask the people there. A says - "someone is enthusiastic", inferring the someone is B. And implying that calling the embassy is a more difficult method to find the statistics, so B must be really enthusiastic about doing this homework assignment to go to that much trouble!
It ends with a adage: If something is worth doing, it is worth doing well. (basically it encourages a person to do a good job).
Hope that helps!
When I am kidding around with a friend, I will speak that way too. Like, if they yawn, I will say "Someone's tired". I could say "You are tired" but that 'stating the obvious'. Saying 'someone' makes them think a little, then realize it is they who are tired!