> I guess what meant here is that one should never make mistake of assuming that a highly reliable system can be built. Wrong guess imho. It means building hig

> I guess what meant here is that one should never make mistake of assuming that a highly reliable system can be built. Wrong guess imho. It means building highly reliable systems requires knowledge and experiences. Trying to build them and solving the problems step-by-step is one way to understand how it can be achieved.