I'm not sure I'd go with 'discredited'. Paranoia aside, I'd go with 'superseded' by better choices that weren't around in 1999. We probably mean the same thing, but this has become one of my pet peeves.
I'd have said the same thing a few weeks ago. You may have better information than I do; I'm working from the (new) presumption that the supposed random curves aren't likely to be random based on their structure.