This is sort of an interesting idea, but it's obviously a bit too unstructured, I think. What you need is intervals of self-directed learning punctuated by short periods of guidance from a teacher with a reasonably broad range of knowledge. In sum, I'd bet on Montessori over this any day.

If external forces were at work, the iPhones would be getting crushed. Come on, Apple, it's physics. (jklol)

Yes, but you're talking about a blackbody spectrum, whereas the article is implying that this is something else (photons released by chemical reactions, not by the thermal jiggle of charge). See http://en.wikipedia.org/wiki/Biophotons

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

You people who are saying that people should have known better than to put all this information about themselves online are missing the point, I think. This morning, when I first logged on to the facebook and saw the new changed, one of the first items in my main "feed" was a note saying that one of my closer friends from home (but who doesn't go to my school) had posted a message on one of my sister's friends' wall. I don't really have a problem with this, but I don't care and would have preferred not to know. When learning something like this, it forces me to think about it and wonder what _that's_ all about. That's private; it's between them and knowing about it makes me feel like I'm intruding. Were I in my friend's position, I wouldn't want to necessarily notify me of it.

I think the real issue is that the changes create a very self-conscious atmosphere on the facebook, where I must consider my every move because all my friends will be immediately notified of it. When you're in a room of people socializing (perhaps a difficult position for many on ./ ), everyone can hear each other, and that's fine. But you wouldn't want every person in the room to hear every word you say to each person?