It''s not necessary to understand everything to be able to use everything .Many successful
people live by another useful
belief.They don''t believe they have to
know everything about something in order to use it .They know how to use what"s essential without feeling a need to get bogged down in every detail of it .If you study
people who are in power ,you''ll find they have a working knowledge aboout a lot of things but often have little mastery of each and every detail of thier enterprise.