"High reliability can be achieved in a product without having high reliability in the component parts. In fact, any reliability target, no matter how high, can be achieved with only mediocre parts, so long as enough of them are present"
Discuss; an example may help.
This carries the redundancy concept one step beyond the textbook, to having multiple redundancies on the same component. If only one part in a parallel system needs to work to provide reliability of that part of the system, then several parts in parallel should offer very high reliability. Example: four parts in parallel, each with only 0.50 reliability, provide reliability of .50 + .25 + .125 +. 0625 = .9375. Additional parts in parallel continue to improve reliability.
Business