It sounds like one stable micro black hole would not be dangerous. From the estimates I've heard, the LHC could produce as many as 1 black hole per second. I'm not clear on what proportion of its time the LHC would actually be running, but suppose that over the course of its lifetime, it spends 1 full year colliding particles.

One stable micro black hole might be safe. What about 30,000,000 of them?

What makes it a black hole isn't the absolute strength of its gravity. It's the fact that it's compressed, which means that you can get much, MUCH closer to its center of mass. Remember, the force of gravity is inversely proportional to the square of distance, and that makes the force skyrocket as you get closer and closer.

Conceptually, take your lead ball and place a particle at the surface, say a centimeter away from its center of mass. The gravitational force on the particle is negligible. Now collapse the lead ball into a black hole - its radius is now something like 10^-30 meters. While the particle is still a centimeter away, the force it experiences remains unchanged - but move it to the surface (the event horizon) once again, and it is now 10^28 times closer than it was before. The gravitational force on it increases by a factor of 10^56!

As an aside, a stellar mass black hole isn't the size of an atomic nucleus. It's about 30 km in radius, or about the size of Rhode Island.

You're correct in that the effect of gravity from the black hole itself would be negligible from any measurable distance. However, anything coming into contact with the event horizon would be absorbed into the black hole, whether it was sucked in by gravity or not. So the way I see it being dangerous is this:

1. Black hole forms, has enough mass to prevent instant evaporation.
2. Being by far the densest object on the planet, the black hole quickly sinks to the center of the earth.
3. The immense pressures at the earth's core ensure that the black hole gets plenty of fuel, in the form of liquid rock.
4. As the earth's core is consumed by the black hole, the rest of the earth collapses around it, until eventually the entire planet is consumed.

So ironically, the earth would actually be destroyed by its own gravity, not that of the black hole.

They do. 47 + 28 + 20 + 18 + 11 + 6 = 130, which sounds about right to me.

There's some overlap caused by projects that use multiple languages. I wouldn't expect either set of numbers to add up to 100%.

Nope. Try following the link in the actual article: "IPv6 address space given out: 143645.78 /32s in 3090 blocks out of 536870912 possible /32s in the currently defined global unicast space (2000::/3) = 0.027%."

0.027% of the IPv6 address space has been given out. Since the addresses are given out in large blocks, that doesn't mean that each and every address given out is actively being used.

Okay, firstly, a 23% sales tax isn't going to add $6 to the price of a $5 item, so it should be immediately obvious that your numbers are off. The actual final prices will be $5 * (1 + .06 + .23) = $6.45 and $6 * (1 + .06 + .23) = $7.74.

Secondly, assume for the moment your figures were correct. Then Wal-Mart does have the advantage, because what is important is the difference between the percentages, which grows, and not the fact that both percentages increased by the same factor. However, since the percentages actually decrease by the same factor, the difference shrinks, and Wal-Mart in fact appears to be losing advantage under FairTax.