It now appears to be more important to cover your rear, than to have a clear assessment of real risk.
That's the point - THAT is now the REAL risk (probably always was except the number of ways you can now be shot at from the back have increased exponentially). You've got to deal with the world, day to day, as it is - not as you'd like it to be or how it was last year.
Kind of tough but unavoidable and the rule is timeless - it's just the application of it keeps changing. Charles Darwin famously wrote, "
Survival is ultimately dependent on the ability to change and evolve". Or more briefly you could say, "Adapt or the world will get you!"
Keep protecting those precious backsides, folks!