How Do Knots Work?

Knots have been around for a very long time in terms of actually a usefulness. The one example that you gave, which is a really o example, is the example of d and a. In synthetic chemistry, imagine you're trying to synthesize new molecules. You'd really love to have some technique, some mathematical techniques, that will allow you to determine whether or not you're going to ever succeed. So, knots are all around us. Yes.