IF - Simple

according to the Great Santini, eagle scout extraordinaire....the square knot, while one of the most simple knots to tie, is one of the most versatile and valuable to know....

I believe he also said something to the effect of being able to survive in the wilderness with nothing other than a pocket knife and square knot, but that's just him....

Santini tried to teach me knots as a kid, but I've never been able to keep left and right straight so I was a hopeless failure....except for the square knot