A little knowledge can be dangerous

Let us examine the water in the tupperware.
If the tupperware is filled with water(full), try to shake it. Is there any sound? No, but it is heavy.

Let's fill the tupperware with water(50% full), try to shake it now. Do you hear the sound? Yes! Is it heavy? No if compare to the first filled tupperware.

What is the moral behind this? You're right! "A little knowledge can be dangerous".
Imagine what will happen when you start driving? Yes, you will be very careful, obey the traffic rules all the time. How about after 2-3 years? You slowly adapt to the driving environment and form your own habits, do you still be aware of the traffic condition? Well, your mind might slip at the moment. Any careless might lead to accident!

I wish to relate this to the computer knowledge (especialy internet). You know how to start a computer, without relevant knowledge you might afraid of connecting to internet (You might be afraid of login to internet since it is uncontrollable). How about if you know how to update virus pattern, configure firewall? Online become an easy thing. When you working, do you try to access to your company's network from outside (via VPN, modem, remote desktop etc)? Some people know how to use this and this leads to some security issues if you do not manage it properly. A typical example will be connect to company's network and forgot to disconnect it.

In conclusion, if you don't know anything, you might be safe. The most dangerous situation comes when you PARTLY familiar with something.

This is just my opinions... share with all of you!