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In his 1987 letter to shareholders, Buffett stated the following about debt: Alas, what is "tight" and "cheap" money is far from clear at any particular time. We have no ability to forecast interest rates and - maintaining our usual open-minded spirit - believe that no one else can. Therefore, we simply borrow when conditions seem non-oppressive and hope that we will later find intelligent expansion or acquisition opportunities, which - as we have said - are most likely to pop up when conditions in the debt market are clearly oppressive. Our basic principle is that if you want to shoot rare, fast-moving elephants, you should always carry a loaded gun. No finance theory gives this advice.