Yes, Terry Pratchett has been diagnosed with early onset Alzheimer's disease. No, this isn't exactly the best news ever in the history of literature.

But can people please, please, please stop eulogising? As the man himself said:

I would just like to draw attention to everyone reading the above that this should be interpreted as 'I am not dead'. I will, of course, be dead at some future point, as will everybody else.  For me, this maybe further off than you think – it's too soon to tell.

The man aten't dead. Please try and remember that before you start rending your garments and gnashing your teeth.