The vagus nerve innervates critical organs, such as the heart and lungs, making vagus nerve disorders serious. The symptoms of vagus nerve disorder can include cardiac, gastrointestinal, and sensory problems. slide 1 of 4.
KraGorn Active Member. Short throw means a short distance between projector and screen .. say 1-1.75 times screen width as a rough guide, long throw is the converse being 1.75+. That means the HS51 is certainly 'short', from the spec:  Short Throw Lens (100 < 3m), ie. you could fill a 100 diagonal 16:9 screen (7'+ screen width) from less than 9'. I don't know the Sony but generally I think Lens Shift works at least 1/2 height and/or 1/2 width depending on what it's capable of.
Even then, the only projectors with the requisite throw I'm aware of are the Sim 2 DLPs with long throw lens option or the Marantz DLPs with long throw lens option. The Marantz VP15 is excellent, but starts out fairly expensive, and the long throw lens is $3,000! The Sim2 HT380 has a more reasonable $1,000 lens option, but it starts out more expensive to begin with. If you're on a budget, you have to compromise someplace.