3 ms·The experts often have already done that work already, often that's how they became an expert.by tdb7893 7y agoThe experts often have already done that work already, often that's how they became an expert.Spellman 7y agoWhich then means why redo the work when you can call the expert and get things pre-digested for you.Allower 7y agoReviewing numbers is not something you need an engineering expert for..