simple molecular arch pix

Writings on ``Messy'' Computing

Why should we demand that every transistors in a multi-billion transistor chip be prefect? identical to the rest of the transistors on the chip? throughout the entire operational lifetime of the chip?

Given the evidence to date, how reasonable is it to assume that every line of code (LoC) in a multi-million LoC (operating system, application) is correct? free of safety and security bugs?
[Hint: studies repeatedly show the rate of errors in programs is above 1 per 1000 LoC.]

How can we build computing systems that operate correctly (or, at least, well enough), despite these inevitable flaws in their basic components?

André DeHon