3 orders of magnitude.

Yeah that’s why I wonder if there are regional differences. E.g sport vs lead climbing.

Highball boulders are pretty unsafe if you fall near the top. This is why climbers will top rope to figure out all the moves first. This might be true of short outdoor boulders as well just to save effort.

Then there are multi story bouldering walls where you fall onto a ramp. This type of wall will be taller than some rope walls.

Is this a UK thing? Rock climbing here in the US refers to all of it. And usually a gym with rope climbing will usually have a bouldering area. I don’t think I’ve been to a rope gym that didn’t have bouldering… hmmm maybe one small gym in Taiwan, but everywhere else either only had bouldering or had both.

And then where do you draw the line with highballs and non-rope soloing?

Who uses that definition? Bouldering is just a subset of rock climbing. It’s not even super black and white, since highball and free soloing exist.

What’s the difference between bouldering and rock climbing?

There’s a video rental shop in Houston. Don’t understand how they’ve stayed in business for so long.

Use an attosecond laser and hit it with a petawatt!

I think they meant the failed attempt at using it to rescue hostages.