> > There is a fundamental difference between computers and bridges and > elevators. > > That difference is its intended function. > > A bridge is designed to carry loads up to a maximum weight across a fixed > and known horizontal distance. An elevator, the same, across a vertical > distance. > > A computer is a general-purpose device. > > Computers can be made to be extremely reliable if they are designed for a > single purpose, too. And some of the extremely reliable computers are not > even expensive -- when is the last time you had to reboot the thermostat > that controls the air conditioner in your house? > > A general purpose device, by its nature, is a much more complex problem to > solve. > > Which doesn't mean that it will never be solved. It just means that we're > not there yet. > > The Romans were building bridges 2000 years ago and bridges still fail > occasionally. Nice retort. Well put :) Chris
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