I've repeatedly watched the lesson titled "Advanced: Negate All Statements" and in the video the statement used is:
"All cats are pretentious"
JY states there isn't a word that is a direct opposite of "all" so he uses "some... not..." to directly contradict the statement into:
"Some cats are not pretentious"
.
Here's my problem with this.
If "some" means at least one but not all. How is it that the logical opposite of "All cats are pretentious" is "Some cats are not pretentious"??
If we're dealing with the group "cat" and "things that are not pretentious" wouldn't the statement "some cars are not pretentious" leaves the possibility that ZERO cats are not pretentious? Which directly contradicts the definition of some which is at LEAST one but not all?
I'm confused to why he doesn't just use "not all" as the contradiction to "all" which would leave the range (0-99) which would make things simpler by not directly going against the definition of "some"