A good investment strategy is a lot like a championship-winning sports team: you need a great offense and a great defense. With investing, the concept of defense can often be complicated. Just look at the 60/40 portfolio (60% stocks and 40% bonds), which many investors relied upon for decades as an offense/defense strategy. The uncomfortable truth arose last year as investors had to be reminded that there is no inherent relationship that requires bonds to go up when stocks go down. In fact, we are in the type of environment where it is likely that both can go down at the same time.