GENEALOGY WITHOUT DOCUMENTATION IS MYTHOLOGY!!!
Don't leave your descendants scratching their heads trying to figure out where you got your information! Or, as Elder Gene R. Cook stated in March 1995:
"...Leave such good genealogical tracks that anyone could easily follow your Pedigree Charts, Family Group Sheets, and Document Trail, and no one will ever be able to question where you obtained the information shown in your records, nor exactly what it said."