The short read
That last post was quite large. I wouldn't read it. I generally don't read *any* writing on the web unless it is interlaced with images.
So, quickly, with lots of pictures and videos.
If you never met a Chinese person and they just started talking at you wouldn't really know if they were intelligent.
Likewise if you ran into a gain of sand, you wouldn't know if it was intelligent.
However with a translator such as someone who speaks English and Chinese or a microprocessor, you might find that both that Chinese person and the sand are intelligent.
Just to drive the point home. Here is an autistic person... translating.