John/Royson
Reminds me of something (barely) releavnt that my wife and I often discuss.
If each of us did exactly what was recommended for everything we owned - tuned the lawn mower per their schedule, lubricated the kids tricycle wheels every 25 hours of use, calibrated the temperature probes in our enegine analyzers once a year - we'd never get anything done. Nothing.
I always take the common sense approach - as Royson does in his example. Recommendations are great starting points, but the realist in me agrees with Royson.