Now to demonstrate how this can be a problem, to demonstrate how this affects accuracy of our procedure, suppose that the efficiency of a single admin degradation process is 97% and that's a high value. So what that means is every time the Edmund degradation process takes place, there's a 97% chance that the process will take place correctly. We will label that initial amino acid and then release that amino acid. Now this isn't a problem when we have relatively small quantity of amino acids, but what happens if we have, let's say, 50 amino acids in our protein? So we want to calculate mathematically what the probability is of determining the correct sequence by using the ethnic degradation process for protein with 50 amino acids. So there should be an O after this N. So here we have our amino acid, so here we have our protein, we have amino acid number 1234, we have five, six, seven, not shown all the way to 49 and then 50.