I wasn't sure where to post this so sorry if it's in the wrong section.

Any to the topic.

Did the dragon turn up for any explainable divine reason or maybe he knew you were dragon born and thought it would be a prime time to get you or maybe it was a case of wrong place wrong time.

What do you think because I've been pondering this for awhile.

Alduin was thrown to 4E201 by an Elder Scroll.

I assume the razing of Helgen was just pure chance .