Yes I did know that. I am very careful to put the end that comes off the spool through the needle - usually I do that before I cut the thread. Then I make the knot where you bring the thread around, wrap it around the needle a few times and pull it down the thread. It makes such a neat knot. Then I slide the thread through my fingers from needle to end. Sometime during the sewing process, I let the needle dangle for the thread to untangle. That seems to help prevent knots for the most part.