How often do you bump into parked cars while on tbe phone? It's exactly like your phone's hands free mode.

lol just yesterday at lunch I witnessed some air-head crash into someone while staring down at her phone. It's a good thing she did because she wasn't stopping for the light that had just changed to red.

Anyway, the first thing people think of when using Glass is the Social Zombie Apocalypse. A common misconception: the Glass is *not* a replacement for your Phone, nor a social device. There's no Facebook, G+ etc, other than posting media. You can't initiate a textchat via Hangouts or anytihng like that.
As it is now, it's basically purely a Google Now device. Look up Google Now if you don't know it, it's like Siri but with learning capabilities and proactive servicing. It does not bombard you with information, tweets, emails, messages and other such clutter like the pricetags GKY described.

And then they showed some more creative usecases of the thing. Using the built-in camera to zoom in on some faraway text, basically enhancing your eyesight without the need of lenses. Object scanning, like holding up a bluray case and it would give the imdb rating of the title. At one point they held up a book in German, tapped the Glass and said "Glass, read this". It would then project the German text translated into English right on the book, same font and all, overlapping the original German text. Another tap and it would read the book aloud through the earpiece so only the user could hear it. They did say that using the visual translator to read books is tiresome and not optimal, and that it's mostly used to read signs, notices, menu's and the like. It's fast enough to tell it to keep translating and walk about, and everything is suddenly in your native language. This is some serious Deus Ex next level shit.

There will always be morons who will get the latest and greatest just for the hell of it, using only 5% of it's functions. Take smartphones and their neverending FB status updates. Hell, one of the Explorers (beta testers) actually said her biggest gripe was that it can't take selfies, FFS.
But if one can't see the actual real life advantages this device could bring when in the right hands, you're either as shortsighted (pun!) as the Instagram-phone crowd, or hadn't had enough bacon for breakfast.

A friend of mine from Denmark is well-known among all his friends for constantly texting "someone else" and staring down at his phone rather than talking to the friends standing in front of him and when all of his friends that he constantly texts are actually sitting in his living room at the same time, he's texting "someone else".

Sounds like something that might be practical for my line of work

people like to brag about and exaggerate the number of friends they have. this is just a new way of doing that

It's scary how I can tell the difference in weight even if it's only off by .05 grams just by holding it... However, can it actually tell somethings weight?

It's practicality for me though would be to pull up technical details while I'm at someones site. It's often the case that I don't have the proper access to stuff at the clients site because the clients access is restricted. So i'm forced to go back to my PC, or RDP into it to get what I need done on the servers and then abck to the client to test what happened.

Right now I use my phone as a reference for stuff like server names, file locations etc... I could see google glass doing this more efficiently but at the end of the day... Does it really help THAT much? I doubt it.