What is the primary reason that specifying a very high level of reliability for an entire system can be impractical and lead to excessive costs?

Question

Answer

Users will not notice the difference between 99.9% and 99.999% availability.

Answer

The cost of finding and removing each remaining fault increases exponentially as the software gets closer to being fault-free.

Answer

Hardware capable of supporting highly reliable software is not widely available.

Answer

Achieving high reliability requires hiring more expensive senior developers.

Crowdly