It amazes me how many of us are willing to endure non-poka-yoke, that is, processes that are inherently mistake-ready. My current fave is timesheet rekeying by our admin. We're small, so it isn't too bad, but it cannot scale, and as the admin becomes more harried as we grow, mistakes will be made. Guaranteed.

Poka yoke. My new favourite process term. The other two are important, vital even, but poka yoke has to be paramount.

(If you jidoka without poka yoke, how long before a worker is hurt by a machine?)