Err on the side of excess participation-it is costeffective protection against subsequent unexpected and expensive fixes and oversights.
Extra work now will only cause more problems later that will be more costly to fix, so don't do it. 
mnli hypothesis: Extra work now will only cause more problems later that will be more costly to fix, so don't do it.  premise: Err on the side of excess participation-it is costeffective protection against subsequent unexpected and expensive fixes and oversights.