Making the assertions in AboutTheOrderOfEvaluation.fs pass

What did I learn?...

+ Parentheses are used to group  things when you need to be explicit about the order of execution
+ Be careful about using parentheses where you don't need them (e.g., when calling a function)...

	add (1 2)

   This will give a compiler error "This value is not a function and cannot be applied".  I think, because
   it tries to evaluate '1' as a function with '2' as its parameter, before passing the result into the 'add'
   function.

+ The backward pipe operator, <|, is another way of being explicit about order of execution.
+ The choice between using parentheses is really one of style and formatting (sometimes the backward
    pipe operator can make it more readable)
+ I need more practice interpreting F# compiler errors!