Reliability or things that make you go hmm ...

• X10 has been said to work 90% of the time
• Insteon works better (99% of the time?)
• 90% of 364 is 36.4 days failed
• 99% of 364 is 3.6 days failed
• 99.9% - .364 days (~8.7 hours)
• 99.999% - .00364 days (5.2 mins)