Yes, i know Drakonis, i always used the method what you mentioned about copy the installation folder to the Hard Disk and after of this install the O.S, this isn't the situation here, but maybe you don't believe me, in my class room, in the begining have people what didn't knew how to do this:
Start - Programs - MSDos Prompt. (Or be, don't knew nothing about nothing).
And less how to use the command prompt.
We what have some knowledge about, have to make theyr way more easier as possible, cause sometimes you give some advanced tip and the person did it wrong and never solve the problem.
I'm not saying you're wrong, you completely right.