!rant
import analogies

Customer: So I have two emails and I'd like to be able to use them.

Me: Okay, I see you have both Windows Live Mail and Thunderbird...

Customer: Yeah, Thunderbird was the old one we used, we now use the Windows Live Mail, but it's always having problems.

Me: Well, Windows Live Mail isn't supported anymore, so I would recommend moving back to Thunderbird.

Customer: But that would mean I would have to get another email, right?

Me: No... *thinks for a moment* OK, imagine you have a garden hose that is connected to the main line of your house. You with me?

Customer: I guess...

Me: So the connection from your house is your email - or at least the server out on the internet. Now on the other end you have a hose splitter, and it splits off into two other hoses. Still with me?

Customer: Yeah...

Me: So on the end of the other two hoses you have two spray nozzles; one for each hose. Now one nozzle is from company A and the other is from company B. Both nozzles share some spray types on the heads, but there are a few heads on A that B doesn't have and vice versa.

Customer: OK...

Me: Those spray heads are Windows Live Mail and Thunderbird. They receive your mail from the same place, like the water, but they have different features. Does that makes sense?

Customer: I suppose.