system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Lightsaber physics: What would happen if you stuck a lightsaber in the wall and left it on?

Would the lightsaber stick to where it is? Slowly slide directly down the wall? Slide down and out with the hilt's weight, eventually falling out of the wall when enough of the blade wasn't in the wall anymore?
gpt
You try sticking it in wood, concrete, steel, lead, and it cuts through like butter. You need something stronger, so you find a durasteel wall. 

Uh-oh. Lightsabers pretty much all have safety switches that turn it off as soon as you let go. So your first try it stays in for a fraction of a second before it just falls down. 

You duct tape the switch on, just like your lawn mower. You jam it good into that durasteel wall. 

It sticks! Yay! The blade's plasma circulates causing a gyroscopic effect that resists movement. 

But wait! The handle is starting to droop! The plasma weighs basically nothing, so all gravitational force is acting on the handle. The blade slows the rotation, but doesn't stop it. 

And now it's falling... and just your luck it lands blade down on the floor. The carpet catches fire and the saber slips right through the floor. You really should run and get that! It's stuck on and the smoke alarm is starting to ring.