A Tale of Two Engineers

Two to-be engineers whom I have known since schooldays, this is a tale about them. I would not like to say their names so I'll address them as X & Y.
It happened once when X got a new computer, now X wasn't a geek and neither very familiar with computers although he had studied computers throughout school from class VI and also pursuing his engineering degree in IT, so this was when he asked whether I could install Windows XP for him, and I like helping people out, so I did. The very next day he calls up and says there's no sound coming from his speakers and when I went to his place, what I say was that the system audio was muted, any kid would know that the volume controls are the first things to be checked when don't hear any sound from your TV,music system or computer. I asked him to experiment with his computer, by doing so he'll get accustomed to it's features. The next time I get a call from him was around a week later, he complains that he can't plug in his mouse, I told him that it was very easy, just like the headphone jack or telephone jack, but he says that he isn't able to do it. So I goto his place, and OMG! he screwed the mouse jack, newer mice mostly have P/S 2 ports which has 8 pins, all you have to do is just push it in with the arrow on the jack to the right. He tried to plug it by turning it left and right as the result the pins were all bent & twisted, I had to straighten the pins with a narrow headed screw driver, I plugged it in and everything was fine. This was almost 6 months back, and last week I again received a call from him with the same problem, and I found he had done the same thing, what kind of an engineer is he who doesn't know how to plug in a mouse?? He got a job in Wipro Infotech.
The second guy Y, I thought he had good knowledge of computers, though he called me in to re-install his system when it crashed every now and then. A few days back, we were just chatting about computers & technology when the terms relative path & absolute path popped up, and he asks, "What is that?" I was astonished, a final year engineering student asks me what relative path & absolute path is. He got a job in TCS.
I won't say that all engineers are like X & Y but most of them I know are like them. The saddest part is that when MNC's like TCS & Infosys recruit they only want engineering graduates, whereas there are other people who dont have an engineering degree but have 50 times better knowledge and concept than some engineering graduates. Why is it so?