Originally Posted by stemor
Correct me if I'm wrong, but isn't 6-sigma a reference to a repeatable process that is in control but subjuect to random error of some magnitude? This is why it's applicable to the manufacturing of, say, semiconductors or turbine blades.
By definition, a true "six-sigma" program is wasted on a process such as that run by TSA (or Starwood, which has wasted untold time and money pursuing a similar program), which involves a continuum of traveling individuals passing by screening individuals.
Rather than over-complicating the issue, why don't we just insist on the TSA to make logical & effective policies, then scrupulously follow them?
We've seen it applied to non-manufacturing processes too. But your point about the TSA making and following logical and effective policies is taken well --- by me.