I was actually being flippant when making that remark.
Nobody has ever suggested that the DLM system can "think" at all. What I am suggesting, and I will hold to that, is that it does not appear to always work in the same way, which causes frustration for those involved.
I think you're over-simplifying it by saying it's "go" or "no go". The changes it makes to lines certainly don't seem to follow any straightforward rules - and there are instances of people stuck on 15dB with very solid lines after a temporary freak condition caused a few disconnects. Conversely there are people stuck on the default of 6dB with problems, who would love for the SNR to be raised automatically.
If it was (a) made public exactly how it did work (or how it is indended to work), and (b) it always worked in a predictable and sensible way, then perhaps end users who fall foul of its logic decisions would be more forgiving of it.
EZZER is 99% correct and an insignificany 1% wrong.
Please do elaborate? I'd be interested (as I'm sure Ezzer himself would!) in what he is wrong about?