It happened to me a lot; while I was searching something in Google I directed to another irrelevant site that absorbed me and I got everyday visitor of that site! Completely accidentally!
Real life makes no difference; some events happen accidentally and change the way of our lives completely. Sometimes the thing you most want doesn't happen. And sometimes the thing you never expect to happen does.
You see/meet thousands of people every day, and none of them really talk to you. And then you meet /see one person, and your life is changed forever.
Yeah, life is so complex … we could plan for tomorrow but we could not assure what really will happen.