the 'presentation' may not be a public one, if you know what I mean.
LeeShep's presence at SPIE could be solely predicated on a mandate to Get Busy with The Right People.
Inventor's Rule #683: Thou shalt never disregard the potential for historic significance which oftentimes proves to have originated from the sketch made on the back of thine cocktail napkin.
If you don't believe me, go ask Bob Metcalfe.
:-)
R.