The world would be a very different place if we had to wrap our physics around faster than light particles.
How so and for whom?
If this discovery is confirmed, I'm assuming that no one will contend that these extraordinarly fast moving particles didn't just come into being or that laws of physics which we have relied upon for years just suddenly changed. Of course, someone might very well be contending these things and so my assumption could be in error, but until someone sets me straight though, I'm going to stick with the assumption.
If the discovery is confirmed, and my assumption is correct then the only thing that will have changed is our understanding of the universe, not the universe itself. Unless one argues that changes in our understanding of the universe literally change the Universe the world will not be a very different place, it will be the same place; better understood by us.
Of course I appreciate that you are probably speaking figuratively and that the world will become a very different place to people who make an effort to understand how the universe (and our world within it) operates.
For the overwhelming majority of human beings, the day before the discovery is confirmed will be generally the same as the day after. The moon will not go spinning of into space, time travelling dead relatives will not turn up at family picnics, we will not meet multiple versions of ourselves in the shopping mall, and men will not begin to bite dogs.
The people who spend their lives trying to understand in their minds and explain on big chalkboards how the universe works might tear a few chunks of hair from their heads and tear up hundreds of notebooks, but their brains will not explode, nor will they find themselve transformed into cosmic fetuses.
Don't get me wrong, I'm not minimizing the potential impact of this discovery if it is confirmed, nor have I climbed onto a soapbox to declare that a change in our theoretical understanding of how the Universe works is nothing compared to the question of where a North Korean mother will find food today for her starving child.
I am though wondering if any of you have given thought to what the long term practical implications of this dramatic change in what we know will have on how we live?