You can very safely remove the “probably” from your first sentence.

I mean, there is a hard limit on how much info your brain can take in. It’s time. Every hour spent learning one thing is an hour not spent learning everything else.

Others have pointed out the degradation issue, but you’re also assuming that all plastics are thermoplastics. They are not. There’s huge variation in chemical composition and material properties between different plastics, and most of them can’t be melted and reformed.

Which athlete / event was this?

“Sealed” is also a vague suggestion with HVAC. Every ducting join, every piece of equipment, all of it leaks. I shudder to think how much heating/cooling is wasted that way.

Yeah, the issue is that already-rich business owners own all the automation and are scooping the profits of the increased productivity.

I kind of disagree with you, in that when I think about the standalone meanings of the words in each phrase, I think they do say the same thing.

The meaning of the words “You are welcome [to the help I gave you]” implies, to me, that there wasn’t actually anything to offer thanks over. You’re acknowledging their thanks, but telling them that they are welcome to take/use whatever it is you’re talking about. [EDIT: normally when someone tells me I’m welcome to something, I feel less compelled to ask and thank in the future. “You’re welcome to anything in the fridge”, for example.]

It does not imply, to me, that I would appreciate them returning the favour. That might be implied meaning in the phrase, but it’s definitely not what those words mean by themselves.

In any case, “You’re welcome”, “no problem”, “no worries”, etc… are all idioms that mean something different than what their individual words mean. The phrases as a whole carry a different meaning than the words themselves suggest.

No, close the lid because that’s how you avoid coating everything in the room with a film of urine and feces. Open toilets are disgusting.