unless ?

[db_8400]

quick question about the unless term

if it says "Unless you’re a millionaire, you’ll never go to space"

would this be Space ----->Millionaire.

B/c unless introduces the necessary which is millionaire in this case.


But if i replaced unless with IF NOT what would that make it?

[tommywallach]

Hey DB,

We've answered tons of questions about unless already. I suggest you take a quick look through the forums (you could search "unless"). You'll find what you're looking for, I promise!

-t

[chike_eze]

Subject: unless ?

quick question about the unless term

if it says "Unless you’re a millionaire, you’ll never go to space"

would this be Space ----->Millionaire.

B/c unless introduces the necessary which is millionaire in this case.


But if i replaced unless with IF NOT what would that make it?

"UNLESS you're a millionaire, you'll never go to space" is equivalent to:
"You'll never go to space UNLESS you're a millionaire"

The rule for UNLESS is: Change UNLESS to IF NOT, pick either condition, make it sufficient and apply IF NOT to it.

e.g., UNLESS X, Y => IF NOT X then Y
X UNLESS Y => IF NOT Y then X

So applied here we get:
IF you're NOT a millionaire, then you'll never go to space

OR

IF you'll sometimes go to space, then you're a millionaire

[db_8400]

where does the sometimes come in from ? Contra?

[db_8400]

Subject: unless ?

quick question about the unless term

if it says "Unless you’re a millionaire, you’ll never go to space"

would this be Space ----->Millionaire.

B/c unless introduces the necessary which is millionaire in this case.


But if i replaced unless with IF NOT what would that make it?

"UNLESS you're a millionaire, you'll never go to space" is equivalent to:
"You'll never go to space UNLESS you're a millionaire"

The rule for UNLESS is: Change UNLESS to IF NOT, pick either condition, make it sufficient and apply IF NOT to it.

e.g., UNLESS X, Y => IF NOT X then Y
X UNLESS Y => IF NOT Y then X

So applied here we get:
IF you're NOT a millionaire, then you'll never go to space

OR

IF you'll sometimes go to space, then you're a millionaire

[chike_eze]

Correct. The logical opposite of never is sometimes.

What is the logical opposite of an empty glass? A full glass? No. Could be quarter full or half full... etc., therefore, the answer is "a not empty glass" which is logically equivalent to some amount of liquid in the glass. Keep in mind that some is 0% < X <= 100%.

Think of never as an empty set, and it's logical opposite as a set with some elements.