Now, as a result of this reasoning we might assume that blood ruptures would be a constant life threatening situation if it wasn't for our body's ability to actually repair and seal off the ruptures in a very effective and very efficient way by using the blood clot and cascade. And one reason why the blood clot and cascade is so effective and so efficient is because it allows a very quick way to produce a great number of blood clots that can aggregate and collect and form a mesh like structure that keeps a watertight seal across that blood vessel and that prevents the movement of blood across that rupture. So this amplification and magnification of blood clots in the blood clot cascade is achieved by using multiple different pathways. So we have the intrinsic pathway and we have the extrinsic pathway and it's also achieved by using positive feedback loops. Now, what is a positive feedback loop? Well, in a certain pathway in a certain reaction pathway we have many intermediates.