hi
   if we want speak about computer and action of that, very things are that we can speak about, but we want speak about dependence of computer.
    i think computer is very very usefull and we can use from that for for example, education, shoping, news, fun etc. for example we use from computer for education now and we spend so much time for this action and we use every day almost that said to be we dependent to computer.
     of course losses also has computer and one of this losses is lazy eyes or overweight or mental illness and other serious illness, i dont ktnow but maybe in future scientists have invented a computer use it is not no harm.
     at the end of paragraph i think we need to control the use of computers to break these problems facing, becuase computer really is vital and we can not dont use this device.

Good Luck!