Complex If Condition

Question

if( false, null, false, 1, 2 ) 
 
 -- Above is a Valid IF condition on Appian. Can you guess the answer and has IF been designed so by Appian ? Is it a best practice or an known issue. 
 
 But Appian does not define so on its help 
 
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if (condition, valueIfTrue, valueIfFalse)

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Returns valueIfTrue if condition returns true; returns valueIfFalse otherwise.

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Returns : Any Type

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condition (Boolean): A test that determines whether valueIfTrue or valueIfFalse will be returned.

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valueIfTrue (Any Type): The value to be returned if condition returns true.

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valueIfFalse (Any Type): The value to be returned if condition returns false.

Josh · Accepted Answer

If() does work with more than 3 arguments, but I believe it is technically unsupported. A future version of Appian could suddenly break this functionality so use it at your own risk.

Amit Mishra · Answer

Answer should be 2 .. because false will execute another false and return will be 2. 
Better use Decision object if you are using 17.2 or latest version.

ganeshbabuj · Answer

Answer is correct , but was surprised to know IF can perform multilevel of conditioning and Appian documentation does not talk about it. 
we are on v 16.2.