This blew my mind. Thank you!

I had to think about it a bit, so for anyone scratching their head right now trying to figure it out, consider it this way:

what matters is the ordering, of heads-then-tails, or tails-then-heads.

It doesn't matter that it's biased one way or the other, if you keep flipping pairs until you get a result with two different values, it's a 50/50 chance whether the less-likely result comes first, or second.

You might only have a 20% chance of any particular pair having a tails (for example), but in the cases where you do have a tails, it's a 50/50 chance that it comes first or second.

Basically it was a box with several tentacles snaking out of it. The tentacles would each have a drill on the end, and they would dig holes in a surface. These holes would be spaced apart and they would be on the outer edge of where the tunnel is meant to be. The silicon arms would be full of actuators that measured their resistance in terms of the momentum they want plus the gravity weight of any nodes after them.

After drilling around the surface, they'd turn (hence tentacles) and tunnel inward. Then, a big hammer or other impact would hit the main surface (after ensuring there were no tentacles below) and the shock of the impact would significantly reduce the amount of rock to carve through.

I really want to know why this wouldn't work, but I'm a designer, not an engineer, and I don't feel like making products. gee I sure wish I knew a bunch of engineers who would make this for me or at least tell me why it wouldn't work so I could use it sometime. Oh sorry for wanting there to be tunnels in every city on earth so we didn't have to destroy woodland to build suburban cities at such a gorgeous rate, I'm just a forest witch who doesn't fit in with startup founders and product engineers. gee wish there was a market fit for me.

"we don't have to dig through the rocks, just dig around the big ones and let them fall free" every digger knows this

Comments URL: https://news.ycombinator.com/item?id=47685487

Points: 3

# Comments: 1

Similarly, if a country can use 80% less oil or imported fuel than they would have without renewable energy, I think they're pretty self-sufficient. They don't have to be isolated from trade, it's okay to import some things and export others. Energy sources can be one of those things. But if they rely on energy imports, then when something disrupts their supply then they are in trouble. However if they get 80% of their energy from renewable sources, then they have significantly less of a problem.

the settings window overlaps with the minimap.

I think it'd be neat if you could zoom? The reason I'd use this over a tiling window manager is to fit more terminals on a screen at once. I think if there was a capability like the Strategic Zoom in Supreme Commander (video: https://www.youtube.com/watch?v=9hJY7exr9KU) it would be much easier to manage many terminals at once, and take advantage of the infinite canvas.

> ... in my opinion, the school was deliberately targeted because the students studying there were mostly the children of Iranian military officials. ...

Your opinion is wrong. There is no possibility of that being the justification for choosing a target. The American armed forces are too professional to do such a thing. Terror is not in our toolbox.

energy is free, it comes from the sun.

cotton is free, it grows from the ground.

plastic is not free, there will never be more of it. I think that resolves the equation.

(this is an oversimplification obviously but I wanted to reframe it from "how much of our current resources does this action use" to "how much of our TOTAL resources does this action use")