ABSTRACT
Because it hosts the tools of the trade, the computer, too, requires attention and handling. The industry developed a range of tools for this. In the past, these tools hung around the belt of the system programmer, but the new intimacy between the end user and the machine forced the user to fumble with the toolkit of the computer itself. Computer technology would not have attained anything near its present status if it were not for its wonderful power of sharing. In principle the attention of a shared resource can be increased if its workload is decreased. Much like a parent who will be able to handle more children if his grown children learn to help themselves with things that before required the parent’s attention, so it is with attention of a shared resource.
