4. Birders. Being able to positively identify that Acrocephalus warbler, http://en.wikipedia.org/wiki/Acrocephalus http://en.wikipedia.org/wiki/Acrocephalus, th

4. Birders. Being able to positively identify that Acrocephalus warbler, http://en.wikipedia.org/wiki/Acrocephalus http://en.wikipedia.org/wiki/Acrocephalus, that just disappeared into that bush destined never to return would be a blessing to just about everyone I know. Digital cameras are already fulfilling this role to a certain extent, but being able to record everything just in case you need to go back and double-check would be an enormous benefit. Having said that, "the one that got away" is a big part of the culture and being able to definitely identify everything (as least much as it is possible with the technology) would probably end up diminishing the experience and generally take the fun out of it.