The text at that non-forbes link is incomplete. This different forbes link works for me, after allowing javascript from forbes and forbesimg:

http://www.forbes.com/sites/startswithabang/2016/01/02/ask-ethan-is-interstellar-travel-possible/

But the article is underwhelming.

Go to 1:13 in the video and watch the blocky building on the right. You can see the smoke/vapor from the radiant heat cooking the surface of the building, much like those old nuke test films before the blast wave hits.

Grid that axe all you want, just not with revisionist BS like that. Duke3D took 2.5 years to launch after DOOM. And then only 5 months after Duke3D landed Quake dropped. Build was fun, but as a technical competition it was no match for what Carmack was doing.

As for hardware, the first useful consumer 3D hardware didn't land for months *after* Quake shipped, when the Verite boards appeared in stores. And Quake supported them very early. And Carmack was also the primary independent champion of Voodoo, and those were the products that grew that market. So if you want to say he failed by missing the PC 3D hardware revolution, then you're arguing that 1) he missed the revolution he was key in making happen, and 2) he doesn't deserve credit for the revolution he did so much to popularize. More bull.

And Unreal always had its own renderer. Why would anyone expect them to drop their homegrown tech and adopt a competitor's? Not every designer jumps engines every 4 months. (Is that you, George?)

Lay blame wherever you want to for iD's modern malaise, but denying their groundbreaking early achievements is just absurd.

"Apple put it in the iMac in 1998 and excluded all other port types."

and then

"I know the iMac had the irDA port."

Now that you've established that you knew your statement was false when you made it, there's not much point in having a factual discussion with you anymore.

Good day.

> Though USB had been on PC motherboards beginning in 1996,
> nobody did anything with it until Apple put it in the
> iMac in 1998 and excluded all other port types.

That's incorrect, on several core points. First off, as for iMacs having no other ports? Not so much. The original iMac also included the irDA port, through which it supported networking and files transfers and printing.

And all the major PC players were all over USB before the iMac appeared on August 15, 1998:

Compaq - 1997

IBM - February 11, 1998

Dell - January 30, 1998

HP - February 14, 1998

Gateway - March 1, 1998

And those aren't introduction dates, they're just handy examples.

By the way, those listed companies were the top 5 PC makers in Q3 1998, globally and in the US, and they accounted for the strait-up majority of the US PC market at the time.

And Apple sold only a tiny fraction of the USB PCs bought in the era of the early iMac. "USB PC shipments were estimated at 20 million units in 1997 and 100 million units in 1999." So I'll split the difference and say 1998 saw 50 million USB PCs sold. How many were iMacs? Try 0.8 million. So that's 0.8 million versus 50 million. Let's be charitable and call that a 50:1 ratio or 2% of market share. Ouch.

Well, that wasn't a full year. How about 1999? We've seen the overall number of 100 million USB PCs, but in 1999 Apple sold only 1.8 million iMacs. So in 1999 USB iMacs again accounted for roughly 2% of the USB PC market. Still ouch.

So, the iMac was not the first PC with USB, the iMac was not the major but rather a fractionally tiny vector for USB into the marketplace, and the iMac did not "exclude all other port types."

Hydrogen peroxide powered rocket packs fly for around 30 seconds, because they have a specific impulse of around 125, meaning that one pound of propellant can make 125 pound-seconds of thrust, meaning that it takes about two pounds of propellant for every second you are in the air. Mass ratios are low for anything strapped to a human, so the exponential nature of the rocket equation can be safely ignored.

A pretty hot (both literally and figuratively) bipropellant rocket could manage about twice the specific impulse, and you could carry somewhat heavier tanks, but two minutes of flight on a rocket pack is probably about the upper limit with conventional propellants.

However, an actual jet pack that used atmospheric oxygen could have an Isp ten times higher, allowing theoretical flights of fifteen minutes or so. Here, it really is a matter of technical development, since jet engines have thrust to weight ratios too low to make it practical. There is movement on this technical front, but it will still take a while.

John Carmack

Can you make VMWare with Windows and and IE7 run in this scenario? There are lots of things (embedded Windows Media, etc) out there that I wouldn't expect to work on this setup, so that makes me wonder if this read only setup would also support VMWare with Windows and IE7, or at least Windows plus Firefox and MS's WMP plugin.

Ideally, the Windows session would pop into existence when invoked from the frozen image, and then everything but the original image disappears at the end of session.

Hmm, can the user have bookmarks with these read-only setups?