In science it is no different than with another branch of sport: sometimes it is not too bad, sometimes it is disappointing. A number of amazing scientific discoveries have been made because something went wrong, someone misunderstood something or someone left something in a drawer. The scientists who were researching a plastic eating enzyme at the University of Portsmouth changed something and suddenly got a free improved version. Nice!
Now that the scientists have unintentionally encountered an improved enzyme, they are going to experiment further to see if the process cannot be further improved. If the process can be used on an industrial scale, that could solve a big problem.
At the moment PET bottles can be made so cheap (because of cheap oil) that producers choose not to recycle old bottles themselves but to simply make more new ones because that is cheaper. No more than a fifth of the plastic bottles are recycled at the moment, so there is still a lot to be gained.
However, Professor John McGeehan of the University thinks that society has since changed enough that manufacturers are also in for a better way of recycling. This enzyme could be the key in this, so hopefully, it can be further developed because the sea and our garbage dumps will not be put on army we shall say.