I’m sure I’m missing something here but isn’t this common knowledge in sailing and climbing? Specifically tying a knot with opposite chirality to one existing

I’m sure I’m missing something here but isn’t this common knowledge in sailing and climbing? Specifically tying a knot with opposite chirality to one existing on a line can cause both knots to capsize and roll out. One would not take it as given that three knots plus three knots would yield six knots in this scenario.