It ultimately stems from the fact that in a multi-user machine, memory initially allocated to a new process is zeroed by the OS, lest it contain information from a previous process, possibly run by a different user.
It ultimately stems from the fact that in a multi-user machine, memory initially allocated to a new process is zeroed by the OS, lest it contain information from a previous process, possibly run by a different user.
A little inaccuracy saves tons of explanation. - H.H. Munro