Top Japanese scientists disagree with Global Warming

I checked the Wikipedia article and it's making a lot more sense actually.
But still if you look at the problem in a slightly different way, or if you word it in a different way with the actions being virtually identical, the explanation doesn't seem to hold as well.

For example let's try this.
You picked door 1 and the host opened door 3 revealing the goat.
You leave and a friend who has no knowledge of the 3rd door shows up and has to pick between door 1 and door 2. That's 50/50 isn't it? Situation is almost virtually the same.
 
First let me apologise for bringing your thread way :eek:fftopic:

My simple explanation goes like this

Say you pick any one of the doors. Obviously there is a 1 in 3 chance of the car being behind this door.

This means there is a 2 in 3 chance of it being behind one of the other 2 doors.

Now the presenter always opens one of the 2 doors you didn't originally choose with a goat behind it.

This means that the door he didn't open must have a 2 in 3 chance of having a car behind it, he has effectively eliminated one dud option, thereby doubling the odds. Hence you always should change to this door.
 
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