One of the gems in CS literature illustrates this nicely: http://cm.bell-labs.com/who/ken/trust.html http://cm.bell-labs.com/who/ken/trust.html Essentially sel

One of the gems in CS literature illustrates this nicely: http://cm.bell-labs.com/who/ken/trust.html http://cm.bell-labs.com/who/ken/trust.html Essentially self-compiling compilers can "remember" things that are nowhere to be found in the source code.