A man walks into a bar in London and orders 3-glasses of beer and sits in the backyard of the room, drinking a sip out of each one in turn.
When he finishes, he comes back to the bar counter and orders 3 more.
The bartender asks him, "You know, beer goes flat after I fill it in the glass; it would taste better if you buy one at a time."
The man replies, "Well, you see, I have two brothers. One is in Dubai, the other in Canada and I'm here in London. When we left home, we promised to each other that we'll drink this way to remember the days when we drank together."
The bartender admits that this is a nice custom and leaves it there.
The man became a regular in the bar, and always drinks the same way. He would order 3-Beers and drink them in turn.
One day, he came in and ordered only 2-Beers. All the other regulars notice and fall silent.
When he came back to the bar for the second round, the bartender said, "I don't want to intrude on your grief, but I wanted to offer my sincere condolences on your great loss."
The man looked confused for a moment, then he laughs.... "Oh, no," he, said, "Everyone's fine - both my brothers are alive. The only thing is I just quit drinking...!"
Moral of the story: most of the times, what we assume as the cause may not be the one …………..but something totally different!