Back to the failure - Did your physical security really evolved in the last 40 years?
There was time when computer security was not a thing. A time blessed by wannabe hackers when sensitive facilities were just wide open because, seriously, who would really attempt to hack into a research or a leading industry system ? This was a long time ago... or was it ? What if I tell you there is a whole branch of information security which still happily lives in this stone-age ?