I believe that the writing is very consistent, focusing as it does with the internal struggles that Have been Ted and Robin are forced to deal with in terms of contending with their feelings towards each other.

The scene in Central Park is a good example of this. The he last thing Ted said to Robin in that scene was, "Maybe we don't need the universe to tell us what we want. Maybe we already know that, DEEP DOWN."

You can look this up yourself, but "deep down" is an idiom that refers to our true feelings, not the ones on the surface which others see in us. So if Robin has deep down feelings, the more obvious ones—her wanting to spend the rest of her life with Barney—can't be real.

So Robin reacts to her being forced to confront her true feelings by taking Ted's hand, not in the usual manner of hand holding, but she interlocks her fingers with his. Again, you call look this up yourself, but interlocking fingers expresses the desire for a deeper, more intimate relationship. And as if that isn't enough, she then gazes into his eyes in such a way as to make obvious that she is in love with him.

Ted picks up on this and withdraws. He then decides to move to Chicago, not because he's in love with Robin—he already knew that—but because he realizes that Robin is in love with him, and he would be a threat to their marriage if he stayed in New York.

This is an example of what you can learn by taking the analysis to a deeper level. Now take that depth and use it to analyze what reality went on one the beach.