Bite Size Psych
Less than 5 percent of people can solve the following riddle.
You’re shown four cards on the table,
for each card, one side has a number,
and the other side is colored.
Below the cards is a rule.
If a card has an even number on one side,
it must be red on the other.
Now one of these cards breaks this rule,
and your job is to fish it out.
You can turn over any card you want,
but if you choose a card which doesn’t need to be inverted,
this will count as a fail.
Which card, slash cards, must you turn over?
Pause the video now to think about it.
The correct answer is to turn over the “8” and the “blue” card.
Remember the rule was:
if the card was even on one side,
it must have a red dot on the other.
Since a rule is only about even numbers,
we don’t need to worry about cards with odd numbers.
Now a common mistake is to choose the red card,
but if you turn over the red card and it has an odd number,
this doesn’t actually break the rule.
The rule was only if a card is even, did it have to be red?
因此 你要看看标“8”的牌 确保它是符合规则的
So you need to check the “8” to make sure it’s right,
and you need to check the “blue” card to
make sure there’s not an even number on the other side.
This might be a little confusing,
but what’s interesting about this riddle is
that there are many variations
and some are much easier to get than others.
For example, try this one.
You’re given four cards again,
but this time the four cards represents four people drinking at a party.
One side has a person’s age,
and the other side has a drink.
The rule is if you’re under 18,
you’re not allowed to drink alcohol.
So which cards should you turn over?
Pause now to think about it.
The correct answer is “16” and “alcohol”.
Once again we don’t really care about the “41-year-old”
or the person drinking “apple juice”.
All we care about is
whether the “16-year-old” is drinking alcohol,
and if the person holding “vodka” is older than 18.
People tend to be better at this version, but why.
The logic behind it is the exact same.
One theory is that humans didn’t evolve
to solve logical problems in the cold, hard way of the first problem.
Instead, we’re social creatures,
and as such are much better at solving problems in the social context.
So how did you go with these riddles?
Also if you’re a content creator,
it’s probably not likely that
you’ve evolved to track all of your work online.
Copypants.com, tracks your images
and helps you engage positively with the people using your work.
They’re the sponsors of the video, so check them out.
It’s free to sign up,
and you can get 30 dollars of in-app credits,
when you register with the code “p2g”.