"Over" refers to physical location, not quantity.
This is false; it also often refers to quantity.
"Nauseous" means it makes people sick. If you're sick, you're nauseated.
Nauseous also means 'feeling sick'.
"Steep learning curve" means the OPPOSITE of how people use it. A learning curve shows mastery over time, if it's steep, then mastery spikes in a very short time. What most people mean is a gradual learning curve when they say steep.
I agree with you about what "steep learning curve" means and disagree with you about your thesis that people mean the opposite. What most people mean when they say "steep learning curve" is a situation in which someone is forced to master a lot of knowledge in a short amount of time.
"That" never refers to humans, "who" and "whom" do.
Relative clauses using
that frequently refer to humans. (
That itself doesn't refer to humans, because in this construction, the word
that is not a pronoun and doesn't refer to anything.)
If you're ever thinking about using a semicolon, don't. Just don't. I promise you you don't need it.
That's just, like, your opinion, man.
"Since" refers to the passage of time, it does not mean the same thing as "because."
Both of these are available meanings for
since.
A special mention to the fact that, as of 2017, it's technically correct to use "they" and "their" to refer to a single person.
I get it, "his" and "her" aren't perfect, inclusiveness, empathy, post-modernism yay!
Still, it was technically incorrect for so long that it trips me up every time I see it.
I have literally no idea what you mean by "technically" here. There's no switch that magically flipped in 2017.
They and
their have been correctly used to refer to single (unidentified) individuals for centuries, and for single identified individuals of non-binary gender more recently that that, but it didn't just start in 2017.
