A simple internal time DSL in C#:
var time = Twelve.Minutes().Ago();
Could be (roughly):
var time = new Time { InPast = true, Perioid = 12, Unit = Unit.Minutes };
This just doesn’t read as well nor is as nice to program against.

Then this example is where we need to build an encapsulated expression.
If we wish to build a rule that is readable and gets composed as a sentence:

Rule.BecomesActive().When().ValueReaches(100);
Or
Rule.When(rule => rule.Value >= 100).BecomesActive();

This is fluency in chaining methods, in a instance which is more complex that I find preferable to using an object initializer.

I don’t like programming against an implementation, in fact I would actively avoid doing so (I would use a factory or some varient) in order to avoid the coupling that “new” keyword entails. A factory would allow me to string methods on my created object at the point of creation without knowing the underlying implementation.

Hope this helps. Thanks for the comment

e.g. var coffee = new CoffeeItem {
Blend = new JavaSumutra(),
HasCream = true,
Size = CoffeeSize.Small)
}

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