Happinow,, I know that your question was sincere and I have not seen this particular answer to your question so I will offer it as a means to fuller understanding. "SDs" are helpful for a number of people with a variety of conditions, a common one being severe anxiety which can lead to agoraphobia for example. This dog "may" have been the difference to the blind individual staying at home or attempting a more normal life like many of us take for granted. Of course I do not know what the dog was there for and am only offering a plausible suggestion. I do not care if a few are faking the need of "SDs" if it helps the majority of those truly in need ... lead a better life. There but for the grace.... Regards Happinow
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