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[wierd]

"stationary" black holes are at best theoretical; Since any infalling matter is very unlikely to hit the black hole "Dead on", the singularity is going to have net rotation, if for no other reason, the conservation of the momentum of the infalling matter. (Further, one has to account for the net quantum spin of all the matter that fell in! The singularity is by definition a point object, and the conserved momentum of the original degenerate matter that spawned it must be conserved!)

This means that black holes are essentially guaranteed to be spinning, and thus will exhibit frame dragging.  This leads to the Kerr metric , which predicts a region around the event horizon in which the frame dragging takes an extreme form; All roads in time eventually lead into the horizon.

This means that unless you have superluminal space drives on that object, it CAN'T hold such an orbit.

[Il Palazzo]

What if we give the falling observer and the object-before-it a propulsion system that would exactly counteract the gravity acceleration at any moment of falling down? That would make them stationary.

If they're stationary, then they're not in-falling, no?

They can still move at a constant speed relative to the black hole and be considered a "stationary observer".

This is getting into a territory that's way over my head, so I'll just make this one comment:
The singularity at R=Rs in the Schwartzschild metric is a coordinate singularity - it disappears if you use a different set of coordinates.
To confuse a coordinate singularity with a physical reality is like saying that there's a singularity at +/- 90 degrees of latitude on Earth, since the coordinate system behaves strangely there (try an tell me what is the longitude of a person standing exactly at the poles), therefore you can never reach the poles.

If you google 'Schwartzschild metric', 'coordinate singularity' you'll get more on the subject by people better versed in it than me.

[RedKing]

So you're saying Santa harnesses the power of a black hole to power his sleigh?
That....actually makes some sense. And would explain his superluminal travel capabilities. He's not flying really fast, he's just warping the fabric of space-time to put shit under your tree.

[wierd]

Clearly-- How else do you think he is able to cram presents for billions of children (Some of which quite large and heavy) into a volume the size of a typical rucksack, and slip down chimneys with them?

His bag of holding is clearly space-warping magic at its finest; Did you REALLY expect there to NOT be temporal consequences?

[Helgoland]

How else do you think he is able to crambillions of children (Some of which quite large and heavy) into a volume the size of a typical rucksack, and slip down chimneys with them?

What I read.

[wierd]

LOL!

That's Goblinclaus silly!

[Frumple]

All hail our robotic overlords!

“There are certain drivers who don’t respect the traffic police. But with the robot it will be different. We should respect the robot,” taxi driver Poro Zidane told AFP.

... or traffic cops, anyway.

[USEC_OFFICER]

The future is... *checks the article* Uh... the 1930s? Those are some really retro-looking robots they have set up.

[Lagslayer]

All hail our robotic overlords!

“There are certain drivers who don’t respect the traffic police. But with the robot it will be different. We should respect the robot,” taxi driver Poro Zidane told AFP.

... or traffic cops, anyway.

So they're just fancy traffic cams?

[Frumple]

Robot traffic cams. It makes all the difference.

[miauw62]

I, for one, welcome our new robotic overlords.

[Helgoland]

It's been done. Word 17, if you were wondering.

[Arx]

I would just like to point out that until Helgo linked that article I assumed you were talking about robots. I mean, traffic lights.

[10ebbor10]

The first manually operated gas lit traffic light was installed in 1868 in London, though it was short-lived due to explosion

Oh dear

[wierd]

The conflation of them "Taking over" has been a populist meme in the UK for a while now, IIRC.

It was even satirized in a fan video of "When robots attack"--(1:25 approx)
https://www.youtube.com/watch?v=fUjGUWo4HrU