Okay got another Watson Glaser Q, this time a deduction.
Q: All Real Estate assets are either very large or located in central areas, but not both. While no apartment is untrendy, all trendy RE assets are very large.
D: Trendy real estate assets are either located in non-central areas or are small.
The answer says that the conclusion follows, but I'm confused.
The first part makes sense, [RE Assets = Very Large or Centrally Located, and, since all Trendy Assets = large, Trendy RE Assets have to be non-central]. But the second part makes no sense to me. We know that all trendy RE assets are very large, therefore, they cannot be small?
I mean, logically, yes the Trendy RE Assets have to either be in non-central areas or they have to be small. But when the question quite literally states that all trendy RE assets are very large, then they obviously can't be small, can they?
The key is the word OR.
For example:
enter javascript:alert("hello") into your browser URL. It will pop up "hello"
then try
javascript:true&&alert("hello")
this also pops up hello
now what happens if you try
javascript:true||alert("hello")
NOTHING!
The && operator means "and". To evaluate the result of true AND <something> you need to carry out the <something>
The || operator means "or".
So if you evaluate the expression true OR <something>
then given that the left hand side of that expression is true, it doesn't even bother continuing to the right hand side, and the alert("hello") is not executed, because there's no point.
It's exactly the same here.
["trendy real-estate assets are located in non-central areas" (true)] OR ["i saw mommy kissing santa claus" (false)] = true
The left hand side of the OR is true, and therefore the right-hand side is irrelevant and the statement overall is true, and the deduction follows. (You could reverse the order of course, it makes no difference: the full logic table is
true OR false
false OR true
true OR true
while only false OR false results in the deduction not following.)
