I can see your point. I'm not saying it's a pleasant prospect to consider. I do consider these sorts of things inevitable teething pains of a one-way process though. Perhaps that seems a little harsh.
I'm not sure what you mean by "one-way process." I think there are certainly situations where bad things happen yet nobody is responsible and nothing needs to be done differently. I do think randomness plays a big role in my arriving at that conclusion, and I don't see a very big role for randomness in the potential abuses of graph search.
