It can't heat the glass if its instantaneous. Heating the glass at all to accomplish vaping would be
super inefficient. I don't think this is a conduction vape. Based on images, the elements are located directly below the bowl, but there is no apparent screen. But what separates the herb? Holes in the glass will allow herb to fall in...There is no indication of any kind of screen, glass or metal or other. I imagine that there is some very creative air routing here. And they call the glow...magical. So the glass is just reflecting/bouncing/scattering the light from the glowing elements. And if its air flowing over hot elements, then that flow will need to be controlled. The grills, all six of 'em, would seem to allow for great flow. I don't want to pull a milkshake through a straw. Or worse, a scenario involving golf balls.
It would be cool if he side grille's where able to filter the air somehow as well. I love the replaceable battery aspect, but fear that they will of course be proprietary. And hopefully they aren't terribly expensive, but I predict something like 59.99 per extra. Place ya betsz...
I love my MF, but to be honest there are certain times I have busted it out with certain -occasional, skeptical- users, and they look at it - then at me like its some steampunk crackpipe. (Well...I guess it is.) Then I tell them it has be hit pretty specifically, and to a new user suddenly a vape can be an odd thing. But I do appreciate the ...elegant?...design of the Firefly. I think that it is a very good thing for the vape industry in that a design like this will resonate with people that are not necessarily embracing the lifestyle so lovingly like we all are. It pushes the legitimacy of the industry ahead just a little bit. (lets hope it actually works) Not that
we need it to be more legit, but there are still so many out there that do. I meet people all the time that are daily users that don't even know what a vape is. That's mind blowing to me. I recently over heard the following: " Isn't a vaporizer like a small microwave?"
I have pretty high hopes for the Firefly, considering how many years its been in the making, you have to think/hope they figured it out.
In my poshest voice, "Firefly, Guvnah?
Edit: It appears, that based on the image above, and this is great speculation, that the lid is actually the top halve of the 'stainless steel airpath'. There is no tube, rather a void between the lid and the unit. You can see how the outer edge of the lid has a lip that sits around the stainless on the bottom. And if that is the case, the bottom halve of it, which looked to be screwed on, is also flat...so that if it collects anything...in theory you could just scrap it off. WIN>but what about the top half...it doesn't look flat, rather concave to accommodate this hypothetical wide and thin airpath.
Edit 2: The 'black ring' on the underside of the lid is not a seal, or a gasket of any kind...that is a reflection of the area around the bottom section. They photographed it on black fabric, and could not edit that out. Also, if you look to the portion of the lid at the far end, you can see in the reflection, that the end of the bottom section has some sort of way of the air to get back down into it, where it immediately leaves out the mouthpeice. Cooler vapors!
I think I have taken this too far.
is it a light bulb? is there a stainless steel heating element under the glass? Will the glass not crack after much temperature shocks, especially if it heats that fast?
If i recall correctly, I remember writing to these guys asking em to come over here to fc. (no reply, of course) I even signed up to their mailing list. but I do not recall ever getting any updates from them. 
