How Did Software Get So Reliable Without Proof? (Primary source)
Despite early fears that software systems would be too error-prone to scale, modern software has become remarkably reliable. This reliability emerged not from widespread formal proofs, but from sound engineering practices like rigorous project management, comprehensive testing, and defensive design.
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“What is the central core of the subject [computer science]? What is it that distinguishes it from the separate subjects with which it is related? What is the linking thread which gathers these disparate branches into a single discipline? My answer to these questions is simple—it is the art of programming a computer.”
— Tony Hoare Primary source“The price of reliability is the pursuit of the utmost simplicity.”
— Tony Hoare Primary source“There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies.”
— Tony Hoare Primary source“In all branches of commerce and industry, history shows dramatic reduction in the error rates when their cost is brought back from the customer to the perpetrator.”
— Tony Hoare Primary source“You will always find those who think they know what is your duty better than you know it.”
— Ralph Waldo Emerson Primary source“For those who live with God there is no last meeting.”
— Helen Keller Primary source“Why is it immoral for you to desire, but moral for others to do so? Why is it immoral to produce a value and keep it, but moral to give it away? And if it is not moral for you to keep a value, why is it moral for others to accept it? If you are selfless and virtuous when you give it, are they not selfish and vicious when they take it?”
— Ayn Rand Primary source“In those days we did not trust anyone who had not been in the war, but we did not completely trust anyone.”
— Ernest Hemingway Primary source