Just imagine, you have be on a important Business or University assignment, you have typed in over 200 + pages and are about to

save it all, when " BINGO " you bump the mains power board or worse, someone blows the fuse on the circuit your computer is on 

any one of these scenarios would send a normally sane person into absolute instant rage..."OH NO !"#$@*! "I have lost
 
all my Data ", now I will have to start all again.....Consider the alternatives....the lost time, 

lost productivity, the lost idea's .


If the user was smart , they would have been using a Uninterruptable power supply which would have "cut in" the exact moment in 

time it took to disrupt the mains supply to that computer.


Consider an even worse case, you are saving data to your IDE drive and there is a black-out or brown-out, you hard drive is now

a paper weight ! If you will have damaged the MBR (rigid disk block) file on your hard drive you may go through hours of re-installing 

your files just to make it work, Even worse if you never backed it all up prior to the crash !.