"Most" confusion

eddySH84

If A most are B and B most are C is it correct to say A most are C ?

kennedybj

7sage.com/lesson/7-common-invalid-argument-forms/

GSU Hopeful

Nope. Two mosts don't form an inference.

eddySH84

@kennedybj thanks for pointing me to it....

Nicole Hopkins

Edit: Thanks, @nye8870 Check this out! http://classic.7sage.com/lesson/invalid-argument-form-6-of-7/

as5324therapy

2 most=some (some A are C)

runiggyrun

I'm not sure I understand the original premise correctly, but if it's "most A's are B's" and "most B's are C's", then we can't say absolutely anything about the relationship between A and C.
You can have, say, 5 of the A's. 3 of those (most) are B's. But what if there are a total of 100 B's, of which 51 (most) are C's, there's no requirement for those 51 to include the 3 A's.
Example: most young women in China (A) are bike riders (B). Most bike riders (B) in China are men (C). These can both be correct, as we know there are more men than young women in China. Yet the conclusion "some young women in China are men" (some A are C) is clearly not correct.

Apologies if I misread the original premise.

nye8870

http://classic.7sage.com/lesson/invalid-argument-form-6-of-7/

nye8870

JY says..." A--most-> B-most->C ....... No valid conclusions!"

nye8870

@as5324therapy said:
2 most=some (some A are C)

not correct...please check video above

abhere

@"GSU Hopeful" said:
Nope. Two mosts don't form an inference.

Well, actually if there was A most B and A most C, then B some C could be concluded.

runiggyrun

Yes, if most A are B AND most A are C, then some B are C would be correct. That's different from the original question, at least the way I understood it.

nye8870

@runiggyrun said:
Yes, if most A are B AND most A are C, then some B are C would be correct.

True....different intersection than OP

as5324therapy

@nye8870 said:
not correct...please check video above

oh yes thanks just saw

GSU Hopeful

@abhere youre right. When I wrote that, I was referring to OP example. I should've been more clear. My fault.