10% failure rate is diabolical - in our industry if we have more than 0.1% we become concerned if it gets to 1% we are seriously worried and the engineering department will drop everything else and concentrate on solving the issues as fast as possible.
10% failure rate may have been the 'norm' in the bad old days of the British bike industry - 10% is totally unacceptable.
Methinks you misread the post..davedyer said, '...If only 10% of them were faulty....' ie. it's a made up number. I suspect he has no idea how many were faulty*
Could just as well have read, 'If only five, or fifteen or one or 99 or point one (chose whatever number you like) percent were faulty*....'
Panic not.
*Whatever 'faulty' means....


