Turbulence hits SQ321

While we all look in horror that the aftermath of the turbulence on SQ321 from London, it is important that speculation does not come into play at this point.
Many people have suggested that the 6000 ft drop was the cause, but knowledgeable experts have said that this was a controlled descent over a period of time.
It is most likely that the plane was tossed around in the air at a very severe level which has caused the carnage, investigations will tell us more when they are released.