Louie, please read my comments again and tell me if you still think your reply makes any sense whatsoever as a response.

Because -- I'm sorry to say -- this represents a total failure of reading comprehension. Quoting myself:

• here:

"SIAI" (or, now, "SI")...does not take the definite article.

• In the same comment:

  Abbrevations differ as to whether they function as names or descriptions: IAS, but the UN. SI(AI) is like the former, not the latter.

• Here::

The "the" isn't droppable, because it was never part of the name in the first place...the article is a part of ...grammar

• Here::

Abbreviations are treated separately from the corresponding full names. One doesn't say "the ABC", but one does say "the American Broadcasting Company". Likewise, "SIAI" (not "the SIAI"), but "the Singularity Institute for Artificial Intelligence".

You say:

I personally find "the SIAI" sound ridiculous to me

Guess what: I agree! Quite a while ago, I pointed out that "the SIAI" was a non-native quirk introduced by XiXiDu (and for some reason picked up by certain native speakers). Maybe it was too subtle for some people, but in that comment I was expressing the fact that "the SIAI" sounds completely wrong to me.

I don't understand why this is so complicated. One says "at the Singularity Institute", but also "at SIAI". This is the default English usage. It's what people have been saying all along. There is nothing weird, complex, or freaky going on here. I'm advocating a return to normalcy!

You ask:

Notice a pattern?

The answer is yes: people consistently underestimate the information content of my comments, and often simply fail to read what they say. This drives me frickin' crazy!