It'd be nice to see some statistics. When there are gas leaks and explosions they quite often make the news, so probably not too hard to track down, but did anyone record who installed/maintained the device that leaked gas, and whether they were qualified?
I'd like to see how 'we' compare with 'them'. I mean, there are probably a lot more of 'us' than there are of 'them' and consequently I'd expect to find the majority of faulty/failed/fatal gas installations to be 'our' responsibility.
Obvious idiots are to be discounted from 'our' numbers, of course - but cannot be ignored in 'their' numbers (should there be any).
Justin.